Well sure - but the suggestion that the manner in which one walks may significantly contribute to the degree of grip offered by wet leather outsoles (as compared with rubber outsoles) is a little hard to swallow. Right up there with the suggestion that the thin subber outsole - adhered to a thick leather sole, mind you - will somehow shift to conform to irregularities in the surface and not evenly distribute weight. Some here seem fully invested in establishing that there is simply no rational justification for the choice of rubber outsoles - and they are prepared to go to quite irrational lengths to do so.
Regardless of gait, rubber outsoles will offer better grip on wet surfaces.
Odd that rubber or part rubber heels are acceptable, while outsoles are anathema (to some). It seems to me that the heel is playing quite a subtantial role in the whole walking process (my heels certaiinly wear faster than soles, yours?), yet use of rubber there doesn't entirely ruin the experience and transform an otherwise quality shoe into the tacky equivalent of plastic covered furniture.