Colin Bohannan wrote an answer about Black Diamond Viper Ice Tool on July 22, 2010
I've climbed a lot of M5-M8 on my Vipers and they work just fine. Titan picks are great for alpine mixed. Solid swings/placements on ice and good enough for moderate mixed stuff. Matching on the Vipers causes a fair bit of pick shift, but they aren't high end mixed tools. Great bang for your buck with these for sure.