Not sure on the dbl walled rims.. but I ride road and mountain. I ride my mountain for winter commuting. When there is no ice or snow, I put on the semi slicks and I can crank out some fast speeds. I thought about another set of rims, but I have changed so many tires, that it only takes me 5-10 minutes to swap between tires for different temps/conditions. If I didnt road bike, I would be able to ride the mountain bike with light semi slicks just fine.