I will give my 2 cents on the lower since I just built one up tonight.
Bought it a few weeks back on a whim since it was the only one available at my local gun shop when I asked if they had any lowers in stock. Serial number is <100 so I guess you can call me an early adopter Initially the price was higher-$300 at LGS (if I recall correctly on their website had them at $350 when I bought it) but the LGS owner gave me a discount price which was down to the website price of $285 today. Still, even with the discount the price was not comparable to a Mega or most other billets from what I've seen.
Initial impressions (this is my 6th build, but 1st with billet). Decent finish. Decent lines. Assembly went together relatively smoothly with a PSA Magpul STR build kit, so it appears in spec. Passed the function tests, but haven't fired it. This lower is going to be set aside until I can get another upper for it.
Pros that I can see-Pretty much in spec (based on the assembly with lower build kit, not by any measurements taken with calipers), it was available during the panic period time when the only other lowers available were polymers (albeit at a higher price, availability is not really an issue today compared to forged lowers and billets probably in a few months). Looks decent overall, finish looks nice and it has the lines that tell others it is a billet lower (if that is important to you). Customizable-Taking with the owner of the LGS, they will be offering customized art works (as mentioned above with added cost) or if purchased in qty at same price (I think Qty was 10+, but only really applicable for group buys I guess-when I picked it up they were starting a group buy with the crossed cannon logo similar to the Springfield armory logo-Damn RI gun laws with their 7-day wait). LGS owner told me they are working on integrated trigger guards when I picked it up also.
Cons (so far)-Price. Nothing spectacular about the roll marks or anything else about the lower to really justify $50-$75 price over other billet lowers if they are available (at the time of purchase they weren't). No added features like set screw for rear takedown spring or those lowers with screw to adjust trigger. If they can nudge the price down to compete or offer something the other billet lowers don't have it would help. Buffer tube was somewhat difficult to screw in. It was a mil-spec dimension buffer tube from PSA and I tested it against another forged lower from PSA I have and it screwed in relatively easily on that lower. Maybe the buffer tube or the lower-can't tell.