I bought these in the hopes that I would actually go to the Jazzercise class I signed up for :-).  Still haven't made it to class, but have worn the shoes.  The other reviews are right - the toebox is a little tight.  I'm hoping it does loosen up a bit, but in the meantime, I have re-laced the shoes and that has helped enormously.  With the exception of the toebox, they are super comfy with a lot of grip.  I suppose if I don't make it to Jazzercise, I can always walk the dog in them ;-)