Haven't used the shower yet, but did have a concern that it may leak due to the lack of any caulking between the tub and the wall. I called the dealer and asked about it. They told me that it should be fine and shouldn't leak.
I took another look at the tub and was still concerned about leakage, so decided to caulk it. Just bought a tube of caulk today and plan to caulk it tomorrow. The problem is, if it doesn't leak now, I'll never know if it wasn't going to leak in the first place, or the caulking is the reason it doesn't leak.
I know this didn't answer your question, but it sounds like you may not be the only one with the problem.
Fred