Team rider Rob Yates of Elements EU Ltd recently did some work with the Norwegian mountain rescue, and guess what?
They keep all their kit in Nookie dry packs!
They ones they use pre-date the current camo design, but then they probably aren't thinking low visual impact. They're probably more about not losing their kit in the snow.
For kayakers, however, the camo ones seem to work great :)
A whole range of sizes are available - you can check them out online at nookie.co.uk/drypack