The advice for sales reps to stop talking and listen certainly rings true in my experience. I see a lot of sales materials that are geared towards a scripted pitch: generic powerpoint decks, exhaustive demos, and boilerplate feature description flyers. There's probably a lot of value in sales teams having access to that kind of collateral, but I would wager that there's even more value in knowing how to step away from that material and follow the customer's lead in what to showcase.