G2 internals are very different from SO 80T. Yes, the cavity machining is ~identical. But the mechanisms are very different.
The G2 Icon locking is definitely a Matco/Gearwrench copy. Because it works, is simple, doesn't reduce strength....
If I didn't have a zillion ratchets I'd buy an Icon to try. I'm sure at some point I will buy one anyway LOL.