[Physicist]

For if God does exist, what person would argue He's not a Creationist?

But it all comes down to what you mean by "Creationism". If you mean "anything God does", then yes, God would have to be a creationist. If you mean the trivially refuted myth from Genesis (which is typically what people mean when they capitalize the word "Creationism"), then my answer would be, "a sensible one".

[ALS]

Sensible in your sphere maybe, but not generally held. I know of few that would suggest that Genesis is viewed as a trivial myth.
The only people I hear talking this way are atheists, satanists, evoloonists and the ignorant.

which be thee?