Yes!! Ugly and scary looking. I wear Earth Shoes along with Fit Flops. I love them. I could really feel them working my thighs and butt when I first got them. In fact, you have to be sure to work yourself up when you first get them. Just 2 hrs. at a time. Now I wear them all the time. I have sandals and running shoes and will probably get 1 or 2 pairs for this year.
I wouldn't personally buy shoes for any attested "lifting" or exercise value. I work out for that. Shoes are shoes to me, although shoes with a negative heel (like a pair of Earth Shoes I have) are quite good for helping my spine and posture because they align the body correctly.