I'll bet it was my post that got you looking in his direction so let me briefly share my experience:
I had Greg chamber me a 223 Rem prefit for my TL3. I pestered him with questions prior to purchasing; details on his prefit tolerances, crown options, cerakote questions, pricing, lead times, etc. He had no problem answering all of my questions in a timely manner, even though I hadn't placed the order yet. He seems meticulous, every time I sent him an email or left him a voicemail, he would email back or return my call by the next morning. He will not have you waiting weeks to answer your questions, that is for sure.
Barrel arrived within the quoted lead time, tenon threads, chamber, cerakote, crown were all excellent. Rifle shoots bugholes, just like his website would suggest. I also had him do some work to my Manners T4A. Even though I ordered the correct inlet, the ejection port cutout on the stock did not line up with the action, and the barrel channel was a little off to the side. He fixed the ejection port cutout and evened out the barrel channel nicely, and also skim-bedded the mini-chassis for a very reasonable price and with a quick turnaround.
10/10 would do business with him again. It also doesn't hurt that he stocks more barrels and actions than most other places combined. Would love to set him loose on a full build for me in the future.