Everything about d4
*Why "D4"? I frequently get asked, and gets jumbled with A5 (which can be a climbing grade), and D5 (which stood for "Deuce5"), two brand names I have already been involved with before. My nickname in Yosemite was "Deucey", coined by Grant Hiskes who mangled my Friesland ancestral name "Middendorf" to "Dusseldorf", and Deuce4 is my presen