ATG squats definitely hit the hammies... i think if you wanted to drop the hams and calves for a month it shouldnt harm yo tbh... If you can fit SLDL in the routine then do them as they are good for lots of muscles as well as the hammies (glutes, hip flexors etc etc), but I dont think you need leg curls or any isolation ham work to be honest.
Calves like has been said are DEFINITELY an aesthetic exercise IMO
TEAM CROM (supporter) !!!!