My take is that he is good at what he does, but can be really temperamental if he's not taking his meds. I once talked to him about helping me assemble my shorty AR and all he did is chastise me for stupid ideas around a short barreled AR. If I'm the customer I would expect more friendly service. The dude at Hi-Pro Precision is much more approachable from my interactions with both of these guys.
My $0.02.