I also had a great experience with Cutsforth, and will deal with him again in the future.

He has the Gransfors waterstone right on his main web page:

http://www.cutsforthknives.com/

I'm surprised you missed it.

I have one, but I have to confess I haven't used it at all yet. I've touched up the Wildlife and Gerbers with a Lansky pocket stone, but at home I mostly use emory cloth or 600 grit wet-and-dry sandpaper on a rubber sanding block. It's just easier and faster.

Again, my priorities are different, and for me, weight is a big one. For travelling on foot I wouldn't take a stone, I'd take one of the thin diamond hones that Ragnar sells. I think they're "EZ Lap" but I'm not sure. I've even made a sheath for one knife that has a pocket for one of these (very flat) hones on the backside, out of sight, so knife and hone are always together. The next sheath I make is going to have a loop for a ferrocerium rod firestarter as well.