^^^ Why would one use winter chains when there are excellent studded tyres available?
Good studded tyres are expensive but they also last a looong time. There's a notable increase in effort when riding with studded tyres in snow (compared to non studded tyres) already, how much are chains going to add to that? Vibration must be a killer plus it will guarantee you'll only be riding in "safe" speeds, to put it nicely. Cornering, noise, problems with fenders, problems with snow and ice build up... Also, what kind of wear do chains cause to the tyre surface? Those would be my first questions before even considering switching from studded tyres to chains.
--J