I always have the sole protector installed before I wear them the first time. Provides a nice clean and even surface for them to adhere to. The cobbler sands them a bit to prove a slightly pours for the adhesive to bite into. Vibram makes a very nice thin version that has a slight taper near the back of the sole protector which makes for a very nice transition to where it's ends and meets the leather sole.
I get this done before wearing them outside. I wear the shoes around the house for a week or so, they start to mold a bit then get a topy or vibram added.
Edited by Dd1101 - 3/5/16 at 6:10am