John Daly uses that as a warmup and "how to". it happens to nail the mechanics for you by prioritizing certain exertions and forcing you to SWING the club rather than manipulate the shaft. Once felt and imitated with both hands on the club, the right hand then adds force to the left hand moving the handle, without changing the basic rhythm. More horse power: no difference in rhythm...or alignments or fit or structure. Actually it is a very commonly used and taught short cut, deceptively simple for its quality.