I always wear something comfortable but also sexy, doesn't matter if I'm out partying or if it's just regular day. So I don't worry to much when I take a guy home and if he doesn't like them... Who cares. He won't leave because of that and I'll take them off anyway
I don't think guys really care too much about what knickers I wear. I'm sure if I was getting it on with a guy and he lifted up my skirt. If he didn't like the knickers I was wearing he wouldn't run off would he.