See, I don't think it's a rhetorical question at all.
I ski almost every day at Jackson Hole Mountain Resort. I see all kinds of enormously wide, rockered, and reverse-cambered skis (and all their various permutations) on the groomers every day. To my very untrained eye, some of them look to only have about 100cm of contact with the snow while they're doing that.
Which is why I said "rhetorical" rather than "hypothetical." (Although I confess I was torn.)
To expand out your question, since my Praxis have a continuous curve, if one were to place them on a perfectly hard, perfectly flat surface, their contact length should -- in theory -- be a single point. Since snow-covered slopes are a three dimensional surface, however, that's not what happens in the real world.