I see what your saying, a little 'industry common courtesy' since we live in airports and airplanes. I had a situation last week J/S on AA-80, packed flight had the cockpit J/S. I boarded late (wasn't offered pre-board to meet the crew and find a place for my bag al-la southwest/airtran, ect) when I got to the entrance of the aircraft, I promptly introduced myself to the "# 1 FA" with a smile and hello and was greeted in return without even the offer of a handshake. By the time I showed the crew my credentials (15 seconds) I proceeded to find a 'place for my bag' as the Capt. requested. As I attempted to enter the cabin to do so, the FA steeped in front of me and said no more room for overheads, I need to gate check it. Really!?! I could see many bins still open and wasn't allowed to even attempt to find a spot/rearrange bags. Then, to make a point, she even called the back where the conversation went something like this " yeah, uh-huh, ok, thanks" then promptly told me their was no room for my bag (standard 22' steel side) Thankfully the Capt realized what was going on and personally took my bag down, and retrieved it at destination so I didn't have to go to Bag calim. (I was in full uniform mind you) Thanks Capt! those crusty FA's suck! no need for that!