I went down last year just to see what it was like (I was too new to this biking thing to actually do this ride). It seemed to follow the same course as the Zion Century, which I did last Feb. Zion was an enjoyable ride other than it followed mainly busy highway-type roads. But I only followed so much of the Tour de St. George course, so I could be wrong (I'll have to look up a map).
I am tempted to go down for this one as I am from the St. George area, and always love coming "home". I'll have to check my schedule.
If you can read this, take a pull.