I sent him an email over eBay about that knife a little while back to get some more information on it. He said the spine to edge length was 46mm and the hardness should be about 63HRC. I would have picked it up in a heartbeat if it was a little bit taller, but that's just my preference. Looks like a great knife!
I think a whole load of people have been looking at that knife and wondering about it but haven't pulled the trigger. I've bought a load of stuff from BluewayJapan and have nothing but positives to say about Keiichi. If it was a 270 I might bite
Our restaurant group has two restaurants and the chef in the other spot had this knife. He really enjoyed it but ended up following it with a Konosuke and pretty much abandoning it. Wish I had more info but I rarely got the chance to be around it.