David,
I considered the Blizzard this spring, ordered it and discovered it was almost the same harness as this guy, http://www.rei.com/online/store/ProductDisplay?productId=660378&storeId=8000&catalogId=40000008000&langId=-1 which I already owned. The only discernable difference was the extra 2" on the waist belt of the blizzard, which wouldn't be a problem even with extra clothing on. So, I sent it back and bought a Petzl, which has its drawbacks, but it's comfy and my wife likes the rei special.