Joe,
The TV announcer said he would not recommend the way Zach Johnson putts. Do you agree?
Johnny

Hello Johnny,
Putting styles are very individualistic things. If a conventional style is not working for you, what choice do you have but to try something unconventional? When Chris DiMarco started using the claw grip, people did not recommend that either, but when he started sinking putts from all over the place, more people started using variations of it. Bernhard Langer changes styles all the time, and so do many other pros. Zach tilts the shaft backwards and it works for him because he can keep the face square to the hole that way. This is the main point. Whatever style keeps the face square has to be OK for you.
Joe