*Why "D4"?  I usually get requested,  and gets jumbled with A5 (that is a climbing grade), and D5 (which stood for "Deuce5"), two brands I are actually involved with previously.  My nickname in Yosemite was "Deucey", coined by Grant Hiskes  who mangled my Friesland ancestral title "Middendorf" to "Dusseldorf",  and Deuce4 is my present-day "ha