This is an odd combo to me. Not bad, necessarily. But not sure I think there's much to recommend it, either.
This seems to be a similar breeding (same bloodlines, different mom) that was done: Drama Von schwarz hirten
So, the sire's sire was never titled, as far as I know. Eron's mother Hilda was very drivey, very high energy. I have a daughter of her sister Heidi--I understand that Heidi was calmer and had a sweeter personality. Hilda had trouble staying pregnant because she would circle/spin, IIRC.
Throughout the rest of the pedigree are some very good, individual dogs--some very high drive, a number are known for their hardness and aggression. Many of them could produce bad nerves if not bred with care.
So, with two parents and 2 grandparents untitled/untested? -- what will this litter produce? Could be all over the place. Could be very good, could be very bad, could be mediocre and unremarkable, could be fantastic. Impossible to tell--I'd say go see the parents and see them work and ask if you can visit with them when they're not working, too.