Thats what i'm doing, my rear hope mono hub just keeps breaking and its not worth the money in the long run. I have a rear trials hub on order, but i have to wait until september for it, i am sure it will be worth it though, they have put a lot of design and testing into this hub, and like no other hub on the market, it is sold to be used for trials, chris kings and hopes are designed for xc or possibly downhill, not the rigours of trials.
I was considering a front freewheel setup, but decided not to as they seem to skip a lot and i cant afford new cranks.