That would be reasonably accurate, yeah. The first Incredible Cross Sections book actually has an illustration of a scout trooper on Hoth:
He has slightly different armour, and it looks like there's a snowtrooper backpack mounted behind him on the bike, connected to his suit. So if you want to, you could go all-out, give the scout white hands and legs, and add the heater pack on the bike. But a regular scout trooper minifig is already a lot more accurate than a snowtrooper.