As TTAG reported earlier, the Marines have bought 27,000 Serpa holsters to replace the old M-12 nylon models. Reviews have been mixed…in the same way they were for Heaven’s Gate. There’s no shortage of YouTube footage featuring Serpa-related issues, but now GearScout’s gear wiz, Rob Curtis, a Serpa skeptic, has produced his own footage detailing what he sees as the holster’s three main drawbacks.