I have Grant, Zeus (those purple and white are mine), and TM by Juan.
Neither Zeus nor TM (Juan, or technoir) are made in the same manner as Grant. Grant are overpriced, but the materials and configuration definitely nicer, especially the leather. I am currently doing a write up comparison and hope to share soon.
They may be made by the same shop, but do keep in mind that Grant has used several manufacturers in the past and have gone through many iterations. They don't do a 1.0, 2.0, "new and improved" thing, but they've definitely made changes.
I do understand why everyone's trying to find out Grant's source/manufacturer, but Grant training gloves are honestly not that great. Pretty cool that Dorian is being transparent. Also, don't understand why everyone is so surprised that these companies like Grant outsource manufacturing for the most part, or seem to be angry. Did you think that Elvis made the gloves himself?
Do you think that Dorian or any of these other middlemen hasn't put in time and should be paid their dues? Dorian handles communication, payment, QC (hopefully), and he somehow found a way to communicate directly with these manufacturers, which is great. Same with you people shitting on Bill Beaulieu. His current offerings aren't my style, but he's contributed enough to get his dues. He's not forcing you to buy his wares. It's great that we can now communicate directly with Muhammad, but Bill provides alternative payment methods, his design, input, and logo, etc.
I don't speak spanish fluently, and I sure as hell am not going to wire money directly to Mexico to get some gloves, trust that they'll get through customs without an issue, to some manufacturer that has an instagram page.
Great investigative work destroyer, honestly. But if you really want the Grant configuration, I highly doubt you can get a pair that feels like the exact same thing from Dorian, TM, or new sporting.