Upload & Sell: Off
Well, I'm pretty sure I'm not going to be any more decisive than most. But I do have a suggestion for something the might tip the scales. I have found that in the few times I have converted a snow scene to B&W, that I want to add a little more contrast just to the snow, so that it has slightly more pronounced texture than the color version. Without that I think the B&W snow looks too white and featureless. I don't know, but you might find that if you select the just the snow and apply a gentle curve with greater steepness at the highlight end, it make the B&W stand out as preferable. You don't want to darken it so much as create a little more separation between the subtle highlight tones.
Otherwise I'd probably go with the color, but not with great certainty!