I find RCBO boards are still a bit too dear. Also most standard C/U's aren't tall enough to wire neatly or easily with RCBO's. I used a metal clad wylex with RCBO's today (its 30mm taller). Very nice but very expensive. Personally I only recomend RCBO boards for clients who are very wealthy and prefer the finer things in life.
christ even their db's are better than ours..was that upgraded from an old rewireable board with the finest gold strands as fuse wire..