Shouldn't be an issue as the Nazi Werewolf/Demons didn't have any Third Reich/Nazi insignia at all that I can remember. The uniforms and (albeit stylized) German helmet alone were enough to make them recognizable as "Nazis".And lastly, if you want nazi insignia, just watch where you wear it as in may cause a scene
Second that, their customer service is OUTSTANDING as well.http://www.atthefront.com/
Everything WW2 and their primary business is re-enactors so you know it's accurate.
Most of what I see others put forward as a "Nazi Uniform" is hideously incorrect... Even if you don't buy from these guys browse their site, you'll learn a lot.
For the record though, East German is nothing like WW2 German. It looks and feels VERY different. They are dirt cheap though.