I do agree that opto circuit will give virtually unlimited life cycles to the wah. But the signal chain has many more added path to go thru, so to the purist, the traditional POT is still more feel to the circuit. Anyway, the JD pots lasts a million cycles, so to the average musician will last at least 5-10yrs service before replacement.
Pure analog means life and tone to music in the likes of hendrix. These are days of chopped up signals, which mean easy creation of music but loss of expression and short audience span.