I met Wally last spring at one of the shows....his booth is nearly always mobbed
but if you can fight up to the front talk to him, he's really just a great guy to chat with. Very personable and not at all arrogant about what he knows/doesn't know (even though he's got great animals). I don't think he'd bother to shill, for him its clearly easier just to have great customer service, great animals and a friendly personality.
My SHTCT female I got from him is fantastic and healthy and should produce really well for me next year. While I was buying her and talking poor Wally's head off I watched how he and his son intereacted with some new hobbyists who stopped by. It was just fantastic how they treated them. They were both patient and generous with their experiences without being mean or pushy, explaining lots of detail without overwhelming or even expecting a sale at the end of the interaction. We need more like Wally and Supreme Gecko out there, his business model. integrity and manner is good for the hobby IMO and if every beginner could have a similar buying experience to this I can see many lifelong hobbyists getting made.