I did gives them absolutely no maintenance .... and yet they hold and very resistant.
Model dressed, perfect for putting the office, not necessarily with a suit ... and again, it depends.
But when conditions are spoiled what a pleasure to be in these shoes.
Puddles, projections, overflowing gutters, or even on my bike (all year), I ALWAYS had dry feet.
Well, they may be a little too warm to make acro-branch in July as it happened to me ... but even there, I had no trouble to finish my course.
VERY versatile shoes, a treat.
I use of them (when) I resumed the same !!!