I am thinking of getting a reproduction German badge to add to a display base for a late production Hummel, but had a question regarding which badge the crew would be awarded. The Hummel I am building will be for a Das Reich Panzer Division vehicle. Would the crew be awarded the Panzer Assault Badge or would they receive an artillery badge. Thanks!

I'd reckon they'd be arty, even the Stug crews were arty until later on in the war.

Here's a link to the Waffen Farber which shows arty being separate.

http://www.packrat-toyz.com/reference/heer.htm