Good policy. Get as much info as possible, corroborate, and use common sense/compare to knowledge already acquired.
Yeah, I think it depends on the animal and how much Spider gene is in there.
Apparently, many who do not wobble, still have trouble righting themselves if flipped on their belly. Takes them a little while. Worse for pure spiders.
I wouldn't necessarily try as they feel vulnerable and do not really like it!
In general, as with most things with BP's, it seems to bother us more than them!