I suppose you already know but it can be done water only with a Soft or a Washita too.
I just like playing with slurry. I kind of have a ghetto Nagura system going on. Coticule rubbing stone for whatever a Coarse/middle grit Nagura would be. Couple of varities of Welsh slate rubbing stones to overlap the middle grit and work into the tomo nagura areas. And I've used the banded translucent kind of like folks might a Jnat. I've also got a piece of 800 grit Naniwa that I cut off to use as an extra-coarse nagura. I haven't played with it much, but I'm willing to wager that could be used for anything the 800 grit stone itself can do. I did set one bevel with it for kicks 'n grins, might as well have been using a 1k stone.