Have not bought one knife (aside from the Rambo knife almost 15 years ago) that I would not use.
There were a very few I have passed on, mostly as gifts only ever sold 2, knowing that the quality was there, there just was no compatibility with me.
Ever since I got on the Busse/Kin train I always asses the handle if it would work for me. I didn't get a Boss Jack because it didn't look all that hand friendly to me.