I understand that in some circumstances, you could bring a knife to a gunfight, but I think I would skip that experience anyway. As for the myth about reaction being faster than action, I understand why they tested it the way they did, but I remember that myth always having the reactor being the more skilled- so I think skill and skill differential might matter.
Chinese rocket arrows are cool. No, they aren’t super accurate, but I don’t think that would have prevented them from being used. Warfare did not used to be quite as bloody as it is nowadays.