If you are thinking of adding some wetwall panels into your bathroom, then I would recommend you do so. So long as you buy good quality panels, you should have no problem at all in getting fully waterproof panelling. If you buy the cheap stuff, it might look nice, but it will not be as waterproof as you or I would want. If you spend a little bit more, though, then these panels will almost certainly make your life a bit easier.
I like the look of wetwall panelling, as it can really finish off the whole look and feel of the bathroom. It can also contrast well with the usual all-white nature of a bathroom. If you are looking for a way to make your bathroom less work when it comes to post-shower cleaning, though, wet walls definitely offer a waterproof solution for you.