Ack.. If I'm nose to nose with someone, I'm doing it wrong imo... I might be that close, but got myself all over him,a nd again imo I've done something way, way wrong, or I'm in a judo class/match. For me, and this goes way, way back to working the bar days... If I've got anything to do with it, I do NOT get that close, in front of anyone, ever. There's no time. Some guys, even untrained have really good hand speed, and you literally do not have the reaction time, neuron-speed I'm talking about, to react properly and timely. You need that space. It is not a ... lot .. of space, but you have to have some.