Got a 180mm gyuto blade from Watanabe about a week ago. Being made from blue#2 core cladded in soft stainless if offers both ease of sharpening and good edge retention. Very usable edge OOTB, but I ordered just a blade without handle, so some work has to be done before I could start using it.
Spine was rounded and doesn't require any attention, while choil could have been better.
Just a little bit of rounding with 100 grit sandpaper:
Next step is handle. Opted for simple design, but decided to use Mark's beautiful Bubinga wood.
This is how it looked after shaping with 100 grit.
Used almost all remaining oil to put a finish on it. Pretty glossy but feels good in hand.
It's not visible under artificial light on this picture, but Bubinga has a really nice 3D moving figure. Best Bubinga I have ever saw.
And a choil shot to give you some idea about geometry
My best cutter so far.