I'm broke, so I got non-chamois tights and layer those over my shorts. I only have to buy one, and I don't have to do laundry if I want to ride multiple days in a row.
Also handy when I wore them when I couldn't find my leg warmers. It turned out it was too warm for the tights and I ended up taking them off in a bathroom near the trail and stuffing them in a jersey pocket for the rest of the ride!

Catrin, how are the AmFib tights in comparison to the MidZeros?