I was wanting to get the 272, but they seem to have been discontinued as has been said, so most places only have a couple of tiny or huge sizes left in stock.
Mail ordered some Walsh PBs, and they're the weirdest fitting shoes I think I've ever seen. I have narrow feet, but they pinched at the sides, were too long at the front and had an ultra-low heel cup that I was practically stepping out of on the carpet. Totally useless as mud-shoes for me, so sent them straight back.