I have hypermobility and problems with my feet and a few years ago a colleague suggested a rocker sole trainer as I was in so much pain with plantar fasciitis. I bought some Skechers shape up trainers and found that I could walk normally for the first time in two years 
no more pain and they helped to tone my legs as a bonus.
I bought a few pairs when I could afford it and put them in the wardrobe as I wear them at work (I'm a nurse). Obviously wearing trainers all the time limits what I can wear, but I did buy some nice Skechers shape up leather shoes and a pair of sandals for when I wanted to look a bit nicer.
Then.......they stopped making them 
I couldn't afford MBTs so just bought some more Skechers trainers, but have been searching ever since.
Apparently MBT were taken over by some discount shoe people, the quality and range suffered and the price is still high.
RYN make rocker sole shoes, but it's impossible to find them in the uk.
JML make some trainers like this, but the quality is poor apparently.
I really can't manage without this style of shoe. I've been so much happier and pain free. I've been prescribed NHS insoles, but they work better with the curved sole.
Does anybody know where I might be able to locate a reliable supply of these style of shoes? - preferably leather as I'm sick of wearing trainers.