It's more like there are two factions of bandom - the MCR/FOB/Panic/FBR bands and then Every Other Band Ever. People who slash, I dunno, Bon Jovi and U2 and other bands are kinda peeved that most of us use the terms bandom and bandslash to refer exclusively to the FBR bands plus MCR.

But as far as MCR/FOB/PATD/FBR, I've only found it to be one big happy family.