I think if you're injury prone, it doesn't really matter. Improved strength and mobility never hurt, but I think it's rare that it would make a dramatic difference.
Of course, after Michael Jordan broke his leg, he became one of the strongest guys in the league at his position and was near indestructible....
And if you don't think kettleball squat cleans are difficult, I say, step up to the med-ball
- CJ Kim