Dumb Question about two ladies on the same writer roster facing off?

[RiotGrrl]

It can be fun, I have seen someone RP both their characters before. It would work for something like Miss Fortune and Brittney who used to be tag team partners and now are sworn enemies. A RP between them could lead to other things

[peek6]

I was wondering about something along the same lines. Suppose I want to do a tag match with another RPer, say 'B', so for example:
Red Team: Peek6's Red Char and B's Red Char
vs
Blue Team: Peek6's Blue Char and B's Blue Char

Any thoughts on how to handle the parts of the match where my own red char is facing my own blue char, or B's red char is facing B's blue char?
Any problem if, for example, I RP both of my chars fighting each other briefly (in a single post) before one of them tags out to give the thread back to B?