The only problem is, that shoes that try to target different pronation types actually cause more injuries.
(http://www.sportsci.org/jour/0103/mw.htm#_Toc535425250 cites some studies beginning with "Wearers of expensive running shoes that were promoted as correcting pronation or providing more cushioning experienced a greater prevalence of these running-related injuries than wearers of less expensive shoes [...]")
