In sales processes, showing a product is always better than talking about a product. Better still is co-customizing the product with the customer during the sales pitch. This customization could be as simple as integrations or changing colors. There's no better way for customers to understand a product, imagine how it would fit their needs, and become committed to the purchase than customizing their instance during the sales process. I've watched this brilliant sales tactic fuel tremendous growth at Looker, a fast growing analytics company.