I saw SiC used in a down-hole(180degc ambient) 300W power supply. dual buck converter for 300v to 24v.
So it must be pretty rugged.
Having said that, those power supplies only have to work for 36 hours or so...until the "mole-bot" has got down and sent up the data, then its just left to rot.
I cant really imagine a 800w+, 240vac boost pfc without SiC...unless it has one of those active snubbers which dips the gate voltage as the rev recovery spike flashes past.
I detect people are nervous about sic though, as it isnt so good with surge currents, and very high dv/dt's.
So short circuit protection might be interesting. When i say "detect" , i mean an engineering manager was asking me about using sic in CCM pfc, as if expecting me to have some horror stories about it....it was almost as if he was bracing himself.