I use my PTWs as my primary means of transportation three out of the four seasons here in New York. In the winter, if the roads are clear, I'll ride... otherwise it's time to take the Subaru out of mothballs. But the cost of maintaining the scooter (ANY scooter, not just the BMW scooters) seems to be much higher than maintaining a traditional motorcycle. Maybe it's the nature of the CVT? I don't know enough about Honda's DCT to know if that system is any less maintenance intensive. I do know the CVT systems in automobiles aren't as maintenance intensive because they've managed to do away with the V-Belt that is a "wear item." I haven't done enough research into comparing maintenance costs of an automotive CVT vs the old style torque converter automatics (my Subaru is a 2001 model that still has the torque converter automatic transmission).
In the meantime, I've found my Zero S to be the PERFECT low-maintenance commuter and local runner, enough that I am now considering replacing the C650GT for a more traditional manually-operated two-wheeler. Trying to decide between the F800GT (the more practical choice) or a Yamaha YZF-R3 (which is a lot cheaper, but not quite as practical).