In the time I've spent trying to decide whether it's pronounced "Four-Quattro" or simply "Quattro" my touring partners have gained five minutes on me and are disappearing up the skin track. No matter, Scarpa has decided "hybrid" boots are here to stay and they want in on the plunder. That means they are bringing their considerable expertise to the task of producing the Scarpa Quattro SL Alpine Touring Ski Boots. Where the best-selling touring boot in the world, the Gea RS, wouldn't work with many alpine bindings, the Quattro SL has GripWalk ISO 23223 soles and slips right into any GripWalk binding. Performance is beefed up too, with a full 4-buckle design and a Carbon Core-reinforced Pebax R-New® shell and cuff, and at 1290 grams in a 24.5/25.0 this boot will go up the hill just fine.