It's for a 275W boost pfc. The question was more general though. I dont need single digit nano-second transtions. I just wanted to check if the switching times in fet datasheets were the max the devices could obtain. As I said earlier I never used to even look at them until recently and estimated switching times solely on driver sink/source and total Q for my Vds.
Yea I gues if your trying to thump around a 2-300nC fet it might be worth it. They make hybrid bjts with an integrated FET that works on the same principal called Emitter switched bipolars.