I've got a neighbor that borrowed another guy's Bobcat skidloader.  I was helping him put some fence in, and the skidloader had a post hole auger on the front.  He was having trouble seeing, so he opened the door to get a better view, then without thinking, he lowered the arms a little, except the door was in the way (but only for a second!).  We were able to straighten the door frame, but he had to have a glass company put the glass back in (luckily it didn't break - would have been pretty expensive, being a funny shape and curved).  Anyway, after seeing that, I'm definitely of the opinion that the doors should stay out of the path of the arms and attachments.

Mike