Using a similarly minimalist approach to coverage, Vaja's new i-Volution Holster for iPod touch ($55 and up) continues the approach of the prior i-Volution Holster for iPhone, offering your choice of a plain but premium leather back or one with a metal nub sticking out, for attachment to an optional $4 plastic belt clip. Once again, your choice of 38 Caterina leather colors is offered, with the colors evident here on iPod touch's sides and back, not…
