And here we have guitarists discussing latencies of between 2ms and 5ms.
playing in latency with other musicians and playing in latency with your own instrument are separate topics. the right comparison would be: give a player genetically enhanced superlong arms and let him play his instrument several feet away from his ears... funny image but that's a comparable case. violinists are perhaps 3 feet away from their neighbor, but their instrument is super responsive since it is a) half a feet away from the player's ears and b) in direct contact to his body.
playing guitar means: direct contact with your body (although not as direct als violins) and hearing the (much louder) sound several milliseconds after the body feels it. this is quite a mess...sensualwise.