I will say that I curse the zippered rear window every time I have to unzip the damn thing just to use the rear cargo area. Drafts, snow, leaks, or rain have never been an issue for me (OEM soft tops). I had the regular one on the sport and this Rubi came with the premium. The premium is MUCH better, but neither ever presented any issues in winter.
The plastic windows did get hard and brittle when cold though.
Depending on price, I may get this and sell the OEM softop as it is the best of both worlds I think