Hi George, I suspect he had some form of Rubber soled footwear. Normally climbers wearing crippling Rock shooes made from Aviation "sticky Rubber" which grips like you know what to a blanket! However it is possible to get whats known as approach shoes made from the same knd of Rubber. In effect trainers with climbing soles. I suspect he was wearing these!
I wouldnt want to spend lots of time in a pair of rock boots if I was'nt climbing they are so unconfortable.
Nogbad
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