I don't think the tradition was as ingrained at CAL as it was at UAL.
I did have a few CAL Captains buy me beer, but they were the exception. Maybe 10-15% I'd guess?
I had 100% of the UAL Captains I met buy me drinks as a half-winger. Even if I'd just met them at the hotel check in.
This isn't a slam either! I just think the traditions are different and I'd like to see the traditional UAL model followed.