I've been thinking of a wrap too, thinking about going with a Le Mans Blue. It is reversible. Some of the folks I was talking to said the wraps last about an average of 3 years or so, obviously depending on how often you drive it and in what conditions. Supposedly it also protects the paint underneath fairly well.
2011 Le Mans Blue M3// Black extended Novillo w/ Blue Grey Aluminum trim/DCT/ZTP/ZCW/ZPP/ZCP Premium Sound ///Akrapovic Evolution Exhaust
2012 Le Mans Blue 135i M Pkg DCT
2013 Ford F150 FX4 Supercrew