Agree with what's been said. I really don't see that it would lead to bad habits; after all, you might use it for a while. but eventually you won't need it and you'll just stop doing it.

It's like telling someone to put the aileron stick "under the low wing to support it" when the plane is coming towards you. It's just a crutch to help until the mind/thumb connection comes together, and I doubt anyone that uses it will have a problem forgetting it once they don't need it.
Dennis-