Before you start spouting off at the mouth, I'm not mainline. In fact, I'm regional. However, even though my regional just lost it's identity to our "parent" and now say "Proudly Operated By...", I still would not tell people I fly for "Mainline Air", nor sport their crew tags on my bag.

It's asking for someone to look at you funny, like I would a tool. 4 "Delta" crew tags on 3 bags that belong to a DCI carrier's pilot = excessive and begging for attention in my book.

That's just my 2% of a $1 though.