I've ridden a pair of RTP (tubed) for about two or three years riding in Boston. I haven't had a flat since installation; just a lot of random tar and a huge wad of gum. I have no clue how many miles, but I know the tread is starting to go. They're on a Stump Jumper that weighs a good 40 pounds without me on it. Total weight is usually around 180, depending on what I'm carrying. I think the quality of the ride is worth the risk; as long you "get light" when needed and don't intentionally ride through shards of glass you should be okay. It's worth noting that my perspective skews young (20s-30s) who are probably a lot harder on their bikes. I ride at about 35 psi; some of my friends switched to tubeless and run at 20 psi with great results.