Boy do I relate to this one. I've lost count of the number of times I've tiptoed past vulnerable guitars on stands set up, as you say, right near the throne.Then they put their expensive guitars on their stands, all exposed and stuff, and place it like 1" from the drum construction zone? So if I knock it it's my fault.
Duncan, I sympathise with Dre ... when people do all their catching up in studio time I think they deserve to be drummed at. We've had 3 hour "rehearsals" where chit chat takes up an hour to an hour and a half, and that was when I couldn't play at home - that was all my playing for the week. So I have no qualms about playing when a few of the guys go motor mouth - if I can, I try to corrupt our guitar player into having a quiet jam.