I am running a Spritus Micro Fight clone. Configured for a snug fit and ran 6x mags yesterday (my first outing with the new MWS). Stayed put the entire time, didn’t feel too weighty on the front etc either.
as an aside, first time running the MWS in game. Absolutely loved it! 😍. Have a few little mods/jobs to do next, but down to personal taste etc.