I have the Spot Ajax belt drive bike with the Shimano Alfine 8 IGH. I just got it this summer though, so can't yet attest to it's handling in winter weather, but I'm looking forward to it. I can say that it's really nice not having to clean and lube every week or so. Keep in mind that if you build or convert an existing frame that wasn't designed for belt, you'll have to provide a removable link in the stay to allow for belt installation/removal, since the belt can't be "broken" open like a chain can.