RGPs are initially not very comfortable, it's been a long time but when I first got them I would only wear then a few hours, then I slowly worked up to wearing them all day. But now I rarely notice them, unless I get a bit of dust or a loose eyelash under one of them (that can be really uncomfortable).

The nice thing is that they last pretty much forever and care is pretty easy. Just clean them daily and soak them overnight in disinfectant/conditioning fluid.