I don't deal with a lot of end users, I mainly advice stakeholders and try to make them as equipped as possible for making the right overall decisions. That being said I wouldn't because our project maneuvers use bizagi and are comfortable with that notation.

Given the choice I'd probably not use UML BPs a lot either. They are very good if you want to do graphical use cases for architects, but I don't think they have a lot of communicative value unless you know UML.