In reply to jas wood:
I had some evolvs (not the pontas) and I found ny feet got v hot in them and that combined with the synthetic inners as well meant my feet just rolled inside them, despite them being a really good fit otherwise.
I'm a Katana fan, but I have tried lots of shoes and not encountered the same problem as the evolvs (not with 5.10's for example which are also synthetic).