I've been using the Volkl Vacuum skin on my Black Diamond Convert ski for the past few weeks and have some immediate thoughts.
1. Putting typical skins on my skis is sort of like wrestling with a honey covered anaconda. The vacuum skins are domesticated and incredibly well behaved. Putting them on and taking them off is ridiculously easy.
2. Grip and glide are awesome. Used to use straight nylon skins - these things glide a little bit better and grip just as well.
3. Once on - they have never once some loose on the skin up - even in very cold snowy conditions. My last skins would often pick up snow pack under the center section.
4. The problem lies in going for multiple laps. Once the skins come off - they have absolutely no "stickiness" that allows them to go back on a cold and snowy ski. Unless you had the forethought to keep the skins on an inside pocket on your jacket on the way down - and keep the base of your skis clean, you don't stand a chance in hell of getting them to stick on again.
5. For a dog hair, wood chip and dusty encrusted home like mine - normal skins get crazy dirty over the course of my 70+ ski days per season and eventually lose their stick. The vacuum skins are super easy to clean and will (i think) be every bit as useful at the end of the season as they are now.
Overall big fan - just need to figure out a better way to keep them dry and warm during the descents.