Horrible.

9 miles in (nice tailwind too) I got a flat. No big deal. I pull out my trusty 15mm wrench and take the back wheel off, and get the tube out. I pull out my spare tube and put it in the wheel only to discover that with my new wheels, the valve stem isn't long enough. OK, I'll use just patch the old tube and be on my way. The wind noise makes it very difficult to find the puncture. I finally find it and patch it. My fingers are getting numb since it's about freezing. I put some air in the tube. Nothing. There is another puncture. I patch it. Rinse and repeat. Same thing. There is another puncture. I patch the third puncture. I lose the glue. I revert to my backup patch kit. (today I was carrying 2 patch kits) Feeling better, I put the tube into the tire and seat it back on the rim. I'm having a hard time getting the last bit of tire bead over the rim, so I use a lever. You guessed it. SSSSSSSSSSSSSSSSSSSSSSS.... Another puncture. At this point, I give up and walk 2 miles to work.