I was flicking through the BRB over the weekend, and the character section says something along the lines of "...not unusual for ICs to band together in to small units made up entirely of ICs..." which made me think "Ahhh, 3 skink chiefs on Rippers, fully tooled up, as one unit of three!" but then it says, of course, that characters on flying creatures can't join flying units.
Then my brain melted and I wished I was going to be playing at a Bloodbowl tourney instead.
Ah well, three independent chiefs, tooled up, tearing around causing headaches is fine for me. I don't expect I'll be very competitive but then again, I never have been!