If you want the freedom of being able to use a snowboard as well maybe look into a split board. This is a snowboard that separates into skis so you can use skins to get to backcountry powder. I'm guessing you could keep the bindings in place like skis and ride facing forwards like a monoski if you wanted. it would be very pricey though.
please, please just snowboard though, so much better, cooler etc. etc.