I work at a digital agency and deal with a number of Magento sites, the majority of our clients have a B2B feature on their website, all of which use this module. It makes what is normally a tedious process a breeze; much better than native Magento functionality!
Our offers are only addressed to business customers, §14 BGB (German Civil Code), i.e. to natural or legal persons or partnerships with legal capacity, who, upon conclusion of a legal transaction, act in the exercise of their commercial or independent professional activity. We do not conclude contracts with consumers, §13 BGB.