Sorry for the lagged response, I've been on assignment and just catching up.
The fitment to me is great, in person its not that tall at all and allows for a Prinsu or other accessories that might be coming down the line to bolt under the front side of the camper. I have very minimal (almost none) wind noise. As far as the rear gap goes its a design element that again in person looks far better than the photo. I personally love it as I'm a slightly obsessed surfer and love having that little "step" to get on the roof to load boards up. From a design perspective it allow for a much cleaner and better user experience with the rear door and tail gate interaction.
The spacing in the front looks amazing and follows the lines really well. Washing windows right now might be a little tricky though, before I put the camper on I sealed the rear window with a product from Griots Garage and so far it keeps the whole setup very clean. I know they are working on a drop down front window like a traditional camper that will help with this.
The shop is absolutely slammed and their doing their best with getting back to everyone ASAP and I know there is a stack of Tundras being built !
Quick question JMyerz, how is the fitment from the roof to the underside of the X1? My Tundra is a 2019 and it does not have the "shark fin" antenna on the roof, I am curious if the gap is excessive. It also looks like from your picture that the back edge of the shell doesn't extend all the way to the rear of the bed, I am guessing that is just the angle of the picture. How is the spacing between the front of the X1 and the rear window of the Tundra? Is it possible to wash the windows?
Sorry for all the questions, but i am hoping to put a deposit down on Monday. Thanks in advance!