I'm looking into this certification myself. Haven't yet formed a judgment on it.
I'm already certified as a Certified Administrative Professional with the Organizational Management specialty from IAAP as well as having my Microsoft Office Specialist Master certification from Microsoft.
I'm teaching a free webinar on Certification Options for Administrative Professionals on February 23 that you might want to listen to.
You can register here:
https://www.anymeeting.com/AccountManager/RegEv.aspx?PIID=EC53DB8683483D