Vic you have come across as a pretty sensible bloke in the past so I'm surprised to read your comments on this.
You have made some pretty big allegations here which I would advise you to either remove or back up. If you can prove them true, then fair enough and I'd like to see the proof. Indeed if it is true, I'm sure you will have no problem producing evidence to back it up.
However you are sensible enough to know that if your claims are false, trouble could be around the corner.
There was another member here, JohnG I believe, who made similar claims about knowing of lams being used in top flight Australian cricket, but he became very defensive when he was asked to evidence it. He also did not like it when it was suggested that if his information was accurate, why didn't he do something about it?
I have an interest in lam bats but it is purely from the aspect of understanding the physics involved. I may well get one in the future and I may well use it, but it will be only for nets and practice, just to understand the differences involved. I would never use them in a match as it is cheating, plain and simple. That others do use them is not an excuse and it does not justify you or I using them too.
Edit: There seems to be a pattern between those who believe lams are used widely, and an affinity to a certain bat dealer who has a history of perhaps spicing up stories relating to bats to make them more appealing.