Cool amongst peers, sure, but chicks still never paid any attention to me, even after I started carrying around a DTMF tone generator and the knowledge of how to use it... ;)
I found that upgrading mine with a full keypad -- including the ABCD column on the right -- did wonders for my rep. And of course a switch to toggle oscillators, so I could send red box tones.
Yeah but if that's your metric, the only cool thing is leather jackets, motorcycles, and a rejection of authority.