Does the holster stick to your skin?

[S deWoman]

I've never done concealed carry and I don't know any thing about it. I would think that the leather or nylon holster would stick to your skin and make you sweat a lot. Is that the case or not? Also what do find to be better for concealed carry a nylon holster or a leather holster?
Both of these holsters look okay, but I don't know what do you think?
[URL="http://www.shado.com/]leather holster[/URL]
[URL="http://www.readyholster.com]nylon holster[/URL]