He prowls Patagonia's headquarters, in Ventura, California, checking in on new designs (he showed me a sturdy down jacket that felt about as heavy as a paperclip and then said he'd kill me before telling me how they make it) and tinkering with a lightweight camp stove of his own invention at his desk.
When the posse was on the case Mr Clark could present a face of innocence, loitering on the edge of beatings or shootings in a sports jacket and a felt hat.