If you give pgrens panzershreks, their AI potential gets lowered. But if you will blob pgrens with shreks, they still will do lots of damage to infantry, as in this blob they wiil have a decent number of StG44's.
Panzergrens will initially have Kar98k's equipped, but they can be upgraded with StG's (for free?) OR panzershreks, not both. This will make them more vulnerable to infantry when upgraded with shreks, and shrek blobs won't be effective in AI term at all.
What you guys think?