If I have a Steam account with a character on it, as well as a Spiral Knights account with a character on it, is it still possible to merge the accounts in the near future?

I ask this because my Spiral Knights account has beta tester items, but my Steam character is further along.

I also ask that, if the merge were to occur, would I acquire beta-tester equipment for the character that was bound to my Steam account?

What would happen if both accounts had 3 characters?