When I picked up the Grivel Evolution in a store I immediately thought it would be perfect for Liberty Ridge, Coleman Headwall, NR Baker and the like. My personal preferance would be to bring a more substantial second tool than the Grivel 3rd tool.
I did Lib Ridge on July 15th, (the last day of free climbing on Rainier) and there was one pitch of hard ice climbing out of Thumb Rock and hard ice on a traverse below the Black Pyramid and about 500 feet of hard ice below Liberty Cap. I think the Evo would have done quite well for those conditions. In the spring I would guess there will be less hard ice and more snow.