What Jim said about the grips. The HS whips are the 62" models on down in size . Dan reworked the ends so they open up a little more and make them a bit quicker and I think stack longer in the draw.
His classic whip has the leather grip and is more longbow like in cut where the standard whip, he said, is more recurve like.
I went from shooting one of his 66" classic whips to a 64" classic whip a little while ago. I like the 64". Never shot a 62" hs. Waiting for Jim to send me one of his, lol.