I frequent the store in question (Evansville) regularly and am on a first name basis with most of the employees, whom I find to be quite competent. It is interesting that just the day before the OP I had a discussion with one of the fellows about the Byrd head being only available on the Powermatic, and a derivitive on the Jet. I was informed that the Grizzly was very good and used a different angle cut than the Byrd, but that to his knowledge the others used straight cutters so it seems the information was good and not made up. As to the walnut and teak oil, who knows. I did talk to one of the salesman about it yesterday and was told technically teak oil should only be used on teak but walnut oil was a go for anything. On finishing I do a lot of research, but have never had the occasion to use either of these so I don't know how accurate that information is.
I do it right, cause I do it twice.