I'm an engineering surveyor so usually only carry my PPE and small hand tools and inspection equipment that I keep in my bag. There's nothing I carry that sits much higher than 500mm.I was thing radiator grill - Doh!
Think I'd rather have something between me and the stuff in the back. Would;t want it joining me up front.
I agree with you though, that if I was carrying anything bulky, I'd put the grill back on top of the bulkhead