I built up this commuter using a Lynskey 'Crosstown' frame that was on sale.
Belt is quiet, clean and maintenance free. It needed to be re-tensioned after the first 100km or so, but this was easy (ie loosen wheel, pull back, tighten).
Frame has a joint on the rear seatstay.
Braze on is not in an ideal location on chainstay for a neat/traditional cable routing for an IGH, hence loop of cable.
Versa 8 shifters go up well, but not so good shifting down. Not sure if this is the nature of the Nexus hub, my adjustment skills, or something to do with the shifter.
Brakes suck. Cantis were squeeky and lots of fork shudder. V-brakes are a bit weak at the moment as I don't have Travel Agents on them (on order). If the fork had a mount on it I would have put the cable guide there for the canti brakes. Disk would have been better, but frame not set up for that.