Well thanks fer asking. I am in the process of putting a early version cam sprocket on a vvt engine to eliminate the phaser if it works or not I will post my findings .
Also to understand this a bit better I did some digging into the mechanics of the phaser controller which is a solenoid that directs oil pressure to either side of the vane in phaser. When there is no signal from solenoid it is in neutral and so is the phaser so if isn't hooked up to the computer the vvt does not move So in my opinion a phaser lock is an expensive alternative to do nothing that is already done by the engine itself. But this is my 2 cents