Eli wrote a review of Black Diamond Revelation Winter Pack - 2136-2746cu in on June 1, 2013
I got this pack for day ski touring and summer hiking/climbing. Some of the features are great: the avalanche tool pocket is perfect (holds my massive shovel blade w/o difficulty); quick access to the interior of the bag, insulated hydration, etc. It's a dedicated ski pack that still works well for summer.
For me it had a build quality issue that meant I've needed to send it back. The hydration sleeve on the right shoulder strap adds a very stiff seam to the edge of the strap. No matter how I wear the pack this rubs on my collarbone. If you get the pack check the seam to make sure it doesn't cause an issue.