Only carrier that allows any cdma phone is gonna be someone like cricket and I think metropcs, these are the only two carriers to allow this. Which to be honest, I personally wouldn't call them a carrier.
gTen made a great point tho that gsm you could do this, but again has to be unlocked and support the proper band.
Why wouldn't you just upgrade to the Touch Pro 2 (VZW Branded) on Verizon?
~mike