A cordless leaf blower will have sufficient power to blow snow off. You'll get funny looks but it's an efficient way to clean most types of snow off "touchless" and quite quickly.
I've only ever seen electric "cordless" stuff, but if you want to use a gas one, either a 4 stroke or a 2 stroke will do!@SaVAGeSoot, a gas powered leaf blower? Or electric? Probably only for dry powdery sissy snow. Not gonna work for real heavy snow. But it will keep the leaf blower in use thru the inclement weather.