I wouldn't say Hockerty is a scam, but the tailoring is so bad that it's a total waste of money to order custom from them, you would get a better fit buying standard sizes.
I ordered a shirt, vest and pants. Despite careful measurements, the waist on the pants was 2 inches too large, the shirt sleeves were too wide and too long, the shirt itself as too long. Basically, despite paying extra for custom tailoring, the clothes don't fit and I can't return them. The quality of the fabric looks ok, but I can't speak to the durability.