Collars = Get noticed, a bit itchy and sweaty, rather sexualized but not nessesscarily. Fluffy is bound to be more itchy than leather, but up to you. If they are too loose you may play with it too much, but too tight and you'll get a red mark or really sweaty.
Cuff = Looks like a bracelet, also can be itchy but not as much. In general, no-one's going to notice a simple cuff. We all wear bracelets sometimes.