The surviving "Porsche" Tiger II at Bovington is not a production vehicle, this vehicle was the second soft steel prototype made (Fgst. Nr. V2) and did not see active service, hence the lack of Zimmerit. Museum vehicles are rarely accurate references, especially German ones, often being cobbled together from mis-matched parts with little regard for historical accuracy.
Removal of Zimmerit for such modifacations would not be difficult, as it's binding agent was nothing more than Elmer's glue (Polyvinyl acetate) and it was not a particularly hard nor extremely durable substance.
Since most of these vehicles did not have turret track hangers, go ahead, leave them off. Just be careful of what you use for references and what you consider artistic license.
Example: Aberdeen's King Tiger