I am sure would enjoy both
Skiing for me thou,
You may probably get fed up of snowboarding after a while,
walking on flats sections and unclipping at lifts.
Dont be fooled by the rad dude look, as most young kids these days have given up on the board in favour of twin tips and fats etc as you can do more on them.
Which ever you do you are one lucky chap spending winter out there.
Biking will seem quiet tame after spending the season on snow in the alps,
unless you buy a downhill bike 😛