Vasque makes great footwear and the Ice 9000 is Das Boot. I have the original 2004-2005 model, identified by the (sexy) red color. It was updated in 2005, identified by the (ugly) orange color. The updates were relatively minor and you can still find the older model on sale for $199, a great deal if your size is available.
My climbing partner and I both use this boot extensively and find them extremely comfortable and warm during extended below zero temps. The inner boots lace very snugly, although I am considering replacing them with a foam bootie. They work well by themselves around camp although they are a bit slick-soled.
They take crampons well, although as always try your crampons on with an overboot. With a better lacing system like the La Sportiva Spantik these would really kick butt. Denali Approved.