I have a city bike with a Nexus 8-speed and I'd like to rebuild the rear wheel with an Alfine 8-speed. The only hubs I can find all seem to be disc mount hubs. My city bike has v-brakes. Is it ok to use the "disc mount" hub on a non-disc wheel? The description seems to say "disc brake compatible", which sort of implies it's possible but not required to use the mount, but I would like to make sure before purchasing the hub.