I bought a set of cast wheels a little while back with the idea that when my Tourance's on my wire wheels were ready to be replaced, I'd put a set of TKC80's on the wire wheels and have some streety tires on the cast wheels and swap back and forth depending on what sort of riding I wanted to do. Well, the Tourance's are just about done, but I'm second-guessing my approach now. I'm wondering if swapping wheels will prove to be too big a PITA, and I should just go for a decent 80/20 or 90/10 tire and call it good enough. Most of my regular riding is rough, goaty (supposedly "paved" ) backroads in the Santa Cruz mountains, but I want to have the ability to ride some non-technical dirt when time permits. In the interest of not turning this into a tire thread, I'm not looking for tire advice so much as I'm looking for input on the practicality of swapping wheels. I'll cross the "which tire" bridge if I decide to stick with one set of wheels.