There really should be a sticky at the top of each Pro's board that explains what type of questions are appropriate.
I look at it as more a chance to interact with these guys and ask about technique, gigging maybe business stuff.
If you find yourself in the room with [insert your favorite Pro bassist here], are you really gonna ask him what pickguard will fit your bass?
I think the top forum title "Ask a Pro!" sort of invites these random questions. Something like "Pro's Corner" would be more appropriate.
See this sticky that Justin posted on his board:
http://www.talkbass.com/forum/f194/please-read-before-posting-773838/