Hee hee -- I also thought "jeggings" was just a typo. I am *so* ten minutes ago...
Have never seen these, but IMHO, super super snug jeans with lots of stretch do not look very flattering unless you have extremely skinny legs. Like, Mick Jagger legs. As Angie said, more rigid jeans give greater definition and help avoid the stuffed sausage look.
I'm thinking, though, that if you wore a dress over top (i.e., longer than a tunic) they might work, since most of the thigh would be hidden.