An Apothecary is a waste but Dwarfs should take 4 rerolls? What the hell are they going to do with them all?
I don't see how an Apo can be a waste if you use it on your first CAS. If you still haven't used him by the second half use him on the first KO. Even Dwarf armor will break.
Hobgoblins, Goblins, Halflings, Snotlings and Thralls are the only pieces where you are losing TV by using an Apo to get them back in the game. Every other piece is an even trade or better.
I could see preferring to go with the Bomb thrower if you are looking for shenanigans, but a RR over an Apo for Dwarves doesn't make much sense to me.