The issue with using 2 KB's or DB's for overhead "American" swings is an issue in stability if you ask me. Since there is no catch I can see something very bad happening when fatigue sets in and a loss of control happens.
This is different from a double KB snatch where there is a catch and a clear end to the movement. The overhead swing is a bit too open ended.
And if you don't think kettleball squat cleans are difficult, I say, step up to the med-ball
- CJ Kim