I have two techs that have ability to order, but generally depend on the one. She is good about not over-ordering and since she also refills pyxis, she is more in tune with what is being used. McKesson has asset-management, which will give a reorder point and quantity, so I try and convince who ever is ordering to use it. The Pharmacists only scan items (if we need or not!!!!)
I've just begun training a tech to be my backup when I'm gone and she's also our Pyxis tech, we had the same thinking as you... that'd she'd be good to know whats moving and whats not.