Thanks a bunch for all the nice comments and input!
I'm really into the beutepanzer phenomena, since it seem to be pointing to the pragmatic aspects of war - use everything you can use! At the same time, the mix between the familiar shape of one tank (for example the Sherman) and the markings, equpiment, crew and painting of the (in this case, German) enemy seems to turn the perspective upsidedown. One can get a strange feeling when looking, for example, at a US made M3 Lee, exported to the Russians and captured by the Germans. The white star, changed into the red star, and was lastly overpainted with the balkenkreutz. I'm thinking of building one of those in the near future.
ajlafleche: Thanks for the info of the inaccurate Tamiya kits. I hope that their newer kits is more thoroughly researched.
bufflehead: I don't know how the ammo logistic sourrounding the captured tanks worked in this late stage of the war. I have read somewere that all captured allied tanks in 1944/45 had to be reported to the Army command, and not only to the division or corps HQ. This in contrast to the early days of the war, when - at least on the eastern front - an ordinary infantry division could keep it's "findings". (I think that it was the 72th German Inf. division that came across a bunch of "Soviet" M3 Lees in 1942, incorporated them and toured the countryside with them.) A good upgrading of the divisions anti-tank capability!
Maybe in the later stage of the war, this wasn't possible. That could be the reason why the captured tanks should be reported, so that the ammo logistics could be resolved before the tanks were put into combat? The Germas managed at least to find enough American tanks for the Ardenner offensive, to put into the frontline in an effort to fool the Allies.
I can recommend one great book on this topic: Werner Regenbergs's "Captured American & British tanks under German flag".
Here's a Romanian site, in english, dedicated to Beutepanzers:
http://beute.narod.ru/Beutepanzer/main.htm
And lastly, here's some of the photos that inspired me building the M4A3:
/Tony