What sold me on the wet bath was the toilet position. In the dry bath configuration there wasn't room to take care of business.
I've never had a problem with the walls sweating and we camp year round across the country. We use an expansion rod to hang waders, wet coats, etc. We've used various types of mats to cover the floor after after taking a shower so we have something dry to stand on once the floor is wet. Right now we have a microfiber mat with rubber backing from Camping World. With rare exception we take a "Navy" bath to conserve water while boondocking so the entire bath doesn't actually get wet. If we do need to dry the bath, a microfiber towel does the trick nicely and dries quickly.
Also, having the wet bath option for our floor plan gave us much more kitchen counter space.