Something to consider: if you subscribe to the notion that says "train as you'll fight," then when you train, it's with the gear you'll have on your person every day, not vertical drop Kydex (which is undeniably fast).
For my first four day training course, I went with an OWB Kydex holster, because that's what this particular school recommended, but I had the holster set at an FBI cant, which approximates the angle of my daily carry holster(s). I thought it was a good compromise (and I have Mr. Roscoe Benson of this board to thank for it).
In the classes I've taken since, I wear and train from my Versa Max II, for two reasons: it's one of the holsters I wear daily, and the reinforced mouth undeniably makes proper one-handed re-holstering easier than any non-reinforced design I have.
YMMV - both are great rigs.