1. God exists [most theists, I assume, believe this to be self-evidently true]
or
2. God does not exist [not explored much by a believer, by definition]
Next : [irrespective if god exists or not]
3. Belief in god [ a reasonable or unreasonable belief? evidence?]
4. Non-belief in god [ a reasonable or irrational belief? evidence?]
Evidence for god:
5. Sufficient [Is true or false?]
6. Insufficient or non-existent. [Is this true or false?]
Now, at first glance, the "methodological naturalism" of the scientist would not appear to be in conflict with a belief in god.
But why say "naturalism"

God is supernatural, above nature, and therefore the cause of miracles [read magic].
Again, miracles and magic have no evidentiary support. So a scientist, who is confronted with no evidence for god [using scientific criteria for evidence] believes in god in his private life, but is a defacto atheist when he does science? Not consistent!
The theist scientist is therefore under an additional burden to the atheist one, because atheism is more compatible with the methodological naturalism of science than a theist position is.
So provided we regard god as a supernatural entity [personal opinion,, he is made up and forfils a psychological need], a scientist who believes in god is being irrational with respect to that belief, and inconsistent in the logic he uses for his scientific and private life.
Now, if a theist scientist demands the typical types of evidence in science when he is doing science. [Things like hearsay, or mere argument from authority would not be part of this]. Then why would he relax this when examining the evidence [or the lack of ] for the existence of god. ?
Even granted that evidence for god of the scientifically acceptable types is hard to come by [which makes scientific investigations of god more or less impossible], why the change, and lack of consistency?
Certain productions of gods can be tested for parsimony of explanation, and so now we "believe" in the science of meteorology and the equations of James Clerk Maxwell to explain "Thor's productions", thus Thor, robbed of his [formally] supernaturalistic products of lightning and thunder , fades back into non-reality. No one believes in Thor anymore, because his explanatory power is gone.
The same [in principle] can be done for the sum of all Abrahamic gods: defeat the miracle claims in detail, one after another as false, and the case for god or gods becomes weaker.
The trend in science is clear. less and less 'gaps" for god to hide in. God goes from being creator of the universe, to some metaphor for "goodness" or "morality". The "soul gap" is a favorite place for the sky daddy to lurk in.
So if science can't explain stuff immediately, "god" gets a break-the benefit of the doubt. Is this logical?
No its not, god beliefs are not logical, because they are an emotional investment of believers. religions that do not have gods, but have supernatural things like disembodied souls or re-incarnation, can be challenged [and defeated] in the same way.
In other words, religious belief is some sort of socially-acceptable illogicality and/or mild hysteria, where the believer demands a reason where it may not even be reasonable to suppose that all things have to have a reason or purpose. The theist is impatient, in this sense. [Understandable though, but it is not clear-thinking].
So where does that leave the theist scientist? On shaky ground, I would imagine.
With a little bit of thought the universe must either be :-
Bottom-up: compplex things arise from the interactions of simple laws and objects. Like life.
OR
Top-down: A supernatural deity starts it all off. [And in some belief systems, keeps in control]
Perhaps a mix of both? God plus evolution? Well, maybe, but I smell a logical rat somewhere, although I can't put my finger on it so far. In any event, such a universe would be hard to investigate. It would be a mixture of natural causation and miracles. I don't think we live in that sort of universe. As no scientific theory has ever required god, then I doubt it.
As far as we know, hydrochloric acid and sodium hydroxide ALWAYS produces table salt and water [in solution], not Teddy Bears or fairies, but salty water.
So a chemist goes from his lab after the above experiment, and then "sees" bread and wine transmute into the flesh and blood of Jesus Christ? I don't think so! If the bread and wine are mere metaphors, or symbols, then that is a case of wanting to believe, rather than belief.
If god does exist, then the theist scientist should see [at least occasionally] teddy bears in the products of the test-tube in his lab.
I am sure I must ave made some error somewhere, perhaps others can point it out to me?

