It wont wear it out faster. The issue without low band apply is that low gear is all relying on the sprag. If/when it fails the front drum will overspeed and many times explodes. I was lucky my front drum didn't fail but still changed it. A lot depends also on weight of the car, torque, and 60 foot times. I ran without the low band apply for a long time. This is the first sprag I had fail but at 680 ft lbs torque, 3500 lbs car, and 1.29 60 foot, low band apply was overdue.