I can't imagine that it isn't being done..... the Air Cam would make an AWESOME ski plane! All that power relative to it's weight, and best of all differential thrust! And, it is already so expensive, what's a few more thousand for skis? Seriously, even wheel skis like the Datums I have (check with Jean at Datum) would just be a small bump in the total cost, and anyone flying an Air Cam must have a sense of aeronautical humor that would fit right in with the concept of ski flying. It would be very serious fun
Oh yeah, I forgot it's open cockpit pretty much....so electrically heated clothing like the biker tourers' use would take care of that.