I've just spent a a bit comparing the images on their site of the prototype. I've been comparing them to images in centurion builds and I do think the mould accuracy is good, one thumb print is a detail many kits miss.
My first concern is the rear of the helmet looks more like a ROTJ helmet than a ANH that most have, and it also looks like stickers rather than hand painted, though that makes sense and is easy to change.
The 2nd is isn't not clear if the butt and kidney plates are 1 piece or two.
Would the shape of the rear of the helmet force an ROTJ build or would a ANH be okay? The rest of the build is clearly ANH so I would expect they've gone this route with the butt/kidney too. I gather the helmet was based on a archive one so that may well have been a later one.
I think ultimately I've sold myself on this kit now, I have been investigating other vendors but I *think* I"m about to order one of these.