I flew with only CAL CAs for the first year. Every single one bought at least beers during every trip. Most went far beyond that (including food/drinks for the whole trip). I have personally found the EWR crews to be awesome.
I had the pleasure of flying with a recent UAL upgrade as well. Fantastic experience- competent, professional and friendly. Look forward to future trips with the UAL folks
The bottom line is, like it or not, we are more alike than different. The vast majority are great people from both sides, despite some wedges artificially driven between us.
It reminds me of an interview between WWII pilots (American and German) who said they'd have been good friends if they hadn't been trying to kill each other.