WHile surfing for Skins the TV series, I found this very cool shoe brand with its very cool concept: "ergonomic, sturdy inner support system that can be taken out of a leather or suede shell" (http://www.businessweek.com/innovate/next/archives/2007/07/i_recently_trie.html). You can use a Skins "bone" with other cases!
or watch it here.
