I think it's reasonable to have both turrets and the doohickey marks on the vertical. It's called redundancy. There have been times I have made successful quick shots using reticle holdover only with no time to spin the turret. Shots from 250 out to 450 yds.
I giggle a little when I hear people that "need" to see reticle holdover points on low power and low light. Chances are that if a shot is to be taken at low power and low light, the target will be within MPBR of most any big game center fire cartridge. Hold center and squeeze.
