Many Stug III G's carried Zimmerit, so by using it would still make it histirocally correct
Well Stug III's really didn't see that type of Zimmerit that Tiger 1's (traditional ridged) had. The Stug III had a waffle pattern Zim almost exclusively. Stug IV's had a zimmerit pattern similar to what Tiger's had aka the rigged zimmerit.
Cheers
Rob