Was about to make a post about this exact topic to see if anyone else knew any 650B options. Building a bulletproof/winter/etc bike off of the Twin Six Rando Frame I just ordered. Looking forward to hauling this bike on deployments, etc. And using it around fort drum in winter. As much as a beater bike is probably what I should use for this endeavor I can't bring myself to do it. I want to build a nicer machine from ground up and the purple is glorious. Can't wait to get it finished and ride it around in the snow and stuff