Hiya Joe. Does it have to be Montane? Does it have to be a smock? If not I can offer the Marmot windshirt equivalent with full length zip. Model is Marmot Trailwind Hoody. It's as new, hardly even creased, never worn or even carried in earnest. Better than Marmot in that it packs into a pocket so you can't lose the little stuff bag cos there ain't one!