They would be very nice, if a little spendy. Think I've found some Velocity Quills (650b), but can't bring myself to spend on one rim what I can get a pair of Kinlins for.
Black Kinlin XR31t will do for now, may get some Pacenti Brevets built on Hope hubs (when Pacenti get stock in).
Riding is overrated.
Get some HED Belgiums!