Re: But....
Charlie
Yep, addressed that in a post to Bill.
I've made a few, nothing to write home about, I liked using a somewhat dull 12" tenon saw (13 PPI or sump'n like) to trim and sort of came in from all around the leg toward the middle. I don't know if I liked the dull saw as much as it was what I had on hand, but they do tend to be a little less "catchy" than something really sharp. So dull isn't necessarily always a bad thing I guess.
Sandpaper of course works if for some reason the initial trimming wasn't spot on, which for me was sometimes the case, and most saw cuts need some kind of clean-up and you're not going to have much luck planing the bottom of a trimmed Windsor chair leg - which of course you know. Files and rasps work too, but the paper on a flat surface saves you from yourself.
I can't recall what Mike Dunbar uses/used. Surely his strategy would work. He may very well have used a Japanese saw, I don't know. Might be worth a look at one of his books as a sanity check.