I've never seen a pump that allowed you to set it without a VTBI. If not, then why on earth would you even use a pump?? If you don't set that, the pump has no idea how much fluid is there, and won't do anything until the air reaches the sensor. By that time, you're going to have to re-prime. Those pumps are there to save you time and protect you!
I have seen pumps where you have to input the drug, the amount, the BSA, etc. That can get a bit tedious, but overall I think it's an important safety feature. Just my
, but I think once you get the hang of it, you're going to like it.