Still raging that a Rotring Quattro is the only pen which I have lost (twice!) since I was a junior in high school over four decades ago. Did finally manage to get a replacement for the second one I lost, but if anyone ever sees a special edition Rotring Quattro as sold by Levenger w/ rubber coating for sale, let me know.

That said, these days I just carry a Skilcraft B3 Aviator as a slimmer, more pocketable multi-pen option (though I'm on my second, broke the clip of the first and haven't worked out how to disassemble and replace it).