Thanks to all the responses so far, some very interesting comments.
I am actually quite surprised at some of the comments about the issue of roadblocks (police roadblocks I assume) and the wearing of camouflage materials in relation to the authorities. Being based in Northern Europe specifically Scotland, I personally have never been stopped at a roadblock as roadblocks are something that to my knowledge I have ever heard of one except for the G8 conference at Glen Eagles a few years back when President Bush was there (apparently landed his helicopter on the 18th - absolutely unforgivable) or there was a major incident such as a gas leak. Are roadblocks setup routinely in the US? Anyway even if I was to be stopped at a roadblock by the police why would they have any cause for suspicion even if you were wearing a camouflage smock or jacket? Some high street Camouflage clothing is actually considered quite fashionable over here. You can even get a DPM Kilt. Not exactly my idea of fashion but I think this demonstrates the point.
Thanks to all for the links to the suppliers of US camo. Much appreciated.