OMG, he's gorgeous! He looks like he'd be a goofy pooch.
I've been using the Gentle Leader on my heavy puller for almost 2 years. On a regular basis I attempt to just use the leash on her flat collar, but she's stubborn and reverts to pulling. I'm at the point now where I'm sticking with what works. She walks like a dream on the Gentle Leader and it's not rubbing the fur off of her nose or causing her any discomfort, so I'll probably always walk her with it on.
My husband rarely uses it, but he has more patience than I do and generally walks 1 step forward 2 steps back with her for the duration of his walks with her and she never seems to get it.
IMO, if he walks well on the GL and you can eventually train him to walk nice on regular leash, great, but don't feel bad if you have to continue with the GL as a long term solution. My pooch actually gets her GL for me when we go on walks, she has very positive associations with it. If she's happy, I'm happy.
