FWIW, if you're interested in spending money to get a neat-looking leader, try an eBay search for "Ablon." This is a little hinged blade for cutting film leaders. I don't own one myself, and I don't know much about their history, but I believe they were designed for cutting the long leaders needed by old Leicas (and their clones). They generally go for several tens of dollars, though. For that price, I'll use a pair of scissors, even for my old Zenit C that requires the long leader!