Just recently I've taken to wearing running tights or shorts with a mini-skirt for my legs, and carrying wind pants. So far, so good. Went on an overnight last week-end on the coast, weather was low sixties (F) and windy, overcast/sunny, evenings in the 40's. Was plenty comfortable on the move, great ventilation, dried really quickly once stopped hiking. Threw the wind pants on under the skirt in the evening and slipped the skirt off, quick change, boom, comfortable again. I carried rain pants and rain jacket, but didn't require them. I've worn a rain jacket and wind pants in 50-55 degrees constant misty downpour, legs were wet but dried pretty quickly, rain pants would have been a better choice if it had been raining harder. That was over nylon pants, not the tights.
I feel the tights are more comfortable, have better ventilation, and dry more quickly than the nylon pants. I still carry long johns for sleep wear, layering under the tights if it gets really cold, and wind pants and rain pants for on top. The rain pants just aren't breathable enough for me to want to spend all day in them in anything over 45 F.
Plus, I got them from www.runningfunky.com--just look at the fabric choices! I've gotten so many compliments on my leopard tights--no more boring black for me! P.S.--the only problem is lack of pockets. Now I have to figure out what to do with my EDC items. I guess I just have to be careful and not get bonked on the head and wander away from my backpack.