Hank Haney mentions in Golf Digest that most ams swing way to slow, it seems to be a common 'fault' that he sees. I have seen many, many hacks with a really slooooow backswing and a herky jerky quick downswing.
I do think that swinging back and through at the same pace is a really good swing thought and something that is useful on the golf course. LOL swinging faster can be a form of psychological improvement in that you don't have time to think... Not the best solution though as it tends to work only one day or maybe off and on. The real problem is fear and anxiety, that is what causes the quick bash, hit impulse 'swing'.