Thanks for the link! I'd not found that one. I did find one that had the Acerbis Desertika coat which is Leatt compatible but I didn't think the coat would be ideal for snowmachine use.
Tonight I again worked on fitting my Leatt with my new Tekrider Pro Max Lite vest over my Klim coat. It will work as the collar on the Klim is circular enough to fit through the brace. But, the brace rides a bit higher and limited my head movement too much. I adjusted the brace to its loosest fit and that helped. Still, I'm going to have a tough time layering under my jacket because of the vest. If you wear the jacket with the brace alone it fits quite well but that isn't an option for me. The ideal set-up is a jacket made to fit around the Leatt so your shell is the first thing exposed to the elements. I've now discovered that some snowmachine clothing companies are working on just that.