There are ways to test that and dog brothers are a good example. You still have a lot of knife and weapons guys that do nothing but compliant drills. On top of that the same camp that only does compliant knife drills does the same for empty hand and they also will down play something like mma and what it can offer. As an active member of the FMA community I see this a lot.So if someone attacks you with a knife you know how to disarm them?