Look up Under Armour heatgear compression shorts . They're basically the same as bike shorts (maybe a little thinner) but with no chamois. I've got a pair and they are nice. I was planning on going chamois free as well, but I'm still just using bike shorts. You could probably get away with wearing these on their own. But for regular shorts over top try to find something with no rear pockets (like MTB shorts) that fit you well.
