Interesting...how exactly do you use pastes with a kamisori? Mine wasn't shave ready to my standards so I did my research and honed away. Got a very sharp razor using a 3:2 ratio. It could use a little smoothing though. Do you maintain the same ratio on the CrOx?
That sounds a lot like how I felt about mine. It was sharp and cut very well but needed to be just a bit smoother. It wasn't harsh in that it was biting, it was just that I could really tell that the blade was there against my face, which doesn't happen with my really nice edges. I don't know what ratio mine was honed at, but I touched it up at almost 7-10:1-2. I read somewhere that as you use more and more strokes, the ratio needs to get higher and higher towards the face side of the blade. Maybe I'm wrong, but I seem to remember reading it from a pretty experienced source.
Anyways, none of that was actually answering the question directly. When I used pastes, I basically used the same sort of ratio as I did in honing and did about 30 strokes total on the face (unstamped) and 4-5 on the back (stamped). The edge came out really really smooth and at times I couldn't even feel it cutting hairs. I should add that my CrOx strop has barely any CrOx on it, so if you really put a thick coat of CrOx on, you'd probably need much fewer strokes from what I've gathered through the little reading I've done. I'm no CrOx expert (this my first time using it, in fact), but the success that I had despite my inexperience is a pretty good indication to me that this might be a fairly sound method.