You probably know this- The Kidotai (those black armored Tokyo riot police) agree- They are required to complete the famously grueling, year long Yoshinkan boot camp before they get their button. And nobody thinks they're not ready for duty.
Civilian students at Hombu that get the nod from Kancho can enter the Senshusei course, too. That's like letting civilians into Navy Seal training!
Actually, that training is done for only one reason and that is to toughen those guys up and get them in shape. If you look at what riot police do on the job there is virtually no opportunity for anything that resembles Aikido (other than jo and they get their jo training from Jodo folks at the department).