Ah, nice! those are some pretty rims. But soft pads or no, you'll probably still wear down the brake track over time. Here is my MA40 rim after 7,000 miles. It's fine (and the brake surface is a bit more responsive to being grabbed by the pads) but it does eventually wear through. (Note that I wasn't careful with checking or cleaning my brake pads at the time, although it was on a distance road bike so I wasn't braking a ton as I would have on a commuter.)


I suppose another option, if you want symmetry between front and rear brake tracks, is to hook up a rear brake. Although this drops the simplicity coefficient of the bike just a bit.