Since the SMART button is your sprint, then when you are sprinting and shooting you are also SMARTing. I know that when sprinting you can press crouch to slide (And also SMART is controlled by where you are looking).
So what would happen if you are looking up at an enemy, shooting and want to slide under (Instead of over) something you can see/know is there, but aren't looking under/down.
Would you be able to manually slide under it or would SMART (Accidentally) override you and climb up?