My team now has 4 Certified Scrum Masters. The process we have implemented is very scrum-like, but also incorporates other agile and non-agile practices. It helps for people to get certified for the roles they perform. If certification is available, and if it is monetarily feasible, I would highly recommend it. Certification not only helps the people to feel more empowered to perform in their roles, but it also provides the team with with trained people to help steer the course and champion the ideals regardless of approach. Now, if I can only find a way to get our customers certified as Product owners!
http://www.scrumalliance.org/scrum_certification
