But Django was a master guitarist already before he had the accident. Changing over to playing the other way is a whole different thing in such a case.

It's not just a matter of the hands learning new tricks, the brain's all set up for playing one way - and the better guitarist you are, I suspect the harder it might be for you to change over.

But for someone who has never learned to play, it really shouldn't make too much difference which hand you learn to use for fretting. It's hard either way (and trying to switch hands is a way of reminding ourselves how hard it was).