The blade closes just as easily as an axis lock, the only difference is that the ball is recessed, rather than sticking out like the axis lock. Over time you will get much better at unlocking it, handling it in the store is probably a bad misconception that has turned people away from it. Unless it is nearly impossible for you to unlock in the first place, you will eventually be able to unlock it with ease.
That said, even though the ball lock may be harder to disengage, I personally find it to be more secure, just as smooth, and with less blade play than the axis lock. In time, you will get just as good as unlocking it as you would with an axis, with these added security features as well.