I can only speak from the CWI side, having mine since 1980, but from the various countries I've worked, they seem to be about equal in recognition although the CWI is certainly more prevalent in actual certificated members at the moment. I'm currently working with a predominantly British / UK group at the moment so naturally, they tend to favor the CSWIP Program. Having looked at both sides, I think it's six of one, half a dozen of the other. The CWI Program remains weak, in my opinion, on metrication and ISO terminology but that's up to the Certification Committee to take action, or not.