My take on the 'flavour of the preceding comments.
Tablets have exploded onto the IT scene. They are here. A massive and growing number of the population are using them.
Certainly IT professionals have very real concerns about their networks and security, but these ever newer and expanding devices are a growing fact of life. They have propelled Apple to the largest corporation in the world
At some point all 'corporate IT systems' interface with the public and setting ones organization up as a medieval castle complete with moats wont work. It didn't work to keep the hoards at bay a few hundred years ago and it won't work now. You will embrace and learn how to use and control the new technology or you will perish. Pulling up the drawbridge and manning the turrets will not work!
IT pros come down from your ivory towers and smell the coffee- even if it is laced with arsenic.