I don't care if R2 is SG2. The Tanaka R2 Gyuto was a unicorn for me for sooooo loooong. And after I got it it was still magical. I can remember seeing Tanaka's like this one on the old board and drooling over them. Every time I had the money to buy one new I would call and they'd be sold out.
I think that this might be Theory's favorite knife. If it isn't, it was for a long time!
Great cutter. The feeling that I get using this knife is that it is nimble. and sharp!
This knife is a Western handled (Ironwood) Damascus SaiMai with a R2(SG2) core.