In reply to cliff shasby:
Never had a problem with the XS Edge rubber and my feet never slipped off anything.
As someone else mentioned, the XS Grip2 wears out even faster. If you really want Katanas with XS Grip2 why don´t you buy the women's version?
My last pair off Katana W´s only lasted 5 weeks, then i had a hole at the big toe. Tam i the only one who thinks that the new Vibram rubbers are worse than the old Xs Grip?
The cheaper, and more reliable version would be to get your old pair resoled with Stealth rubber. As mentioned before. You get the shoes that fit you best with the rubber you prefer. Also a resoled pair will last longer since the sole i get from my resoler is always a little bit thicker (i like that).
If you send them to some good resoler you won´t notice any difference to new ones. Katanas resoled with a well done Edge are like new cause the have no downturn or difficult shape.