I have Nittaku Miyabi in flare grip. It's almost new -- I played with it for only one practice session. No dents or anything, but I did slightly sand the wings (only enough to remove the sharp edge).
I originally bought this blade because I wanted to be comfortable with the handshake grip, but after testing it I discovered that I prefer to play handshake grip with my cpen blade (which is also Nittaku Miyabi).