Wow! I suggested this same exact class on the Beta forums! Haha but not the way you did.

My Performer:

Performer-Main weapon Dagger. (Dual Wield)
(Kukiri,Jambiya,etc.)

Jobs- Dancer/Thief

Dancer-Healer Job HoT's, Buffs, etc.
Thief-Standard THF DD etc.

I'll have to find the full list I made somewhere on my comp. for a more detailed idea.