I just watched several YouTube videos of two well-known tiers. The flies I watched tied were a few Salmon flies like the Blue Charm and Rusty Rat. Then I watched 2 tiers, each tying the Grey Ghost. One was tied on a CS 10xl hook and the other on a 6xl hook. One of these tiers used a Renzetti and the other used a LAW vise. The funny thing was that neither used the 'rotary' function for either of these flies although one even said how important it was to get the rib evenly spread the entire length of the hook(tying the Grey Ghost). So I just wonder, if these tiers didn't use the rotary function on these flies where it would have been very appropriate and the function very applicable, why have it at all?
Just asking.

Allan