@T-Rad, oh heck yes, I agree with you, Pokies are much more docile in general and they tend to hunker down and wait for a threat to pass JUST a tad longer than the Psalmies are prepared to do. My P.irminia throws threat poses much more often than any other T I have.
But Frooty is also 100% right, I actually have a friend with one of those demented G.rosea that goes on like an OBT. She was fine when they bought her, but something went haywire and now you can't even budge the lid of the tank without it being skittish and flicking bristles, I think handling is way out of the question.
So ya, each individual T's "personality", can be different, a perfectly docile T could turn X-Files on you with no warning.