The airflow control is a huge advantage for me because I sort of prefer super thick high vg
juice like mt. baker. Tightening up the draw increases the vaccuum and increases the amount of
juice being sent to the wicks. Without that airflow control, I probably wouldn't be able to use mt baker full VG because of dry hits.
Alternatively, if the
juice i'm using is too thin, I can open up the draw and decrease the amount of juice flowing to the wicks to prevent flooding, which has happened to me.
That said, I have the clone of clones, it was a cheap ebay knock off for 40 bucks, but works fantastic. I probably will order the Russian 91% so that I can: A. get it to sit flush on my Provari and B. The finish almost exactly matches my silver Provari.
Those who have issues with the looks, Jwraps sells kayfun lite wraps, mostly carbon fiber look with a variety of colors. None of the super creative options for devices though.