There is a murky area of banjo history which gives rise to many opinions...and speculation. It has to do with transitions between fretless and fretted....stroke and fingerstyle. With some music music it just becomes obvious, and others...not so much. Buckley, in particular, leaves us hanging. He describes both styles in his book, poses with a fretted, and gives very little indication as to what to do for the most part but includes pieces which adapt well to either style. I say the best way is experiment...try it all ways. Nothing wrong with stroking a fretted on this site, or picking a fretless, or fricking a petless... I mean striking the stroke...or whatever. Anyway, I have had the good fortune to borrow a fretted instrument. It is a Luscomb restored by a great local repairman Jeff Branch. It has given me an opportunity to try things I have previously only done on fretless...and in some cases it was obvious that a fretted instrument would have been the proper choice. I'm not sure where we divide at, but certainly all this music needs to be looked at from all possible angles...otherwise, how will we know??