RT (the version used on tablets) is ARM-based, not Intel. Software is also locked to the Microsoft Store, just like Apple's iOS stuff.
I know, thats why I'm wondering if McAfee will be bringing out an App or similar to run in the place of VSE for the Windows RT market.
Hopefully we will be able to keep to all Intel tablets with the full managed version, but someone is bound to come asking for coverage on RT too.
Basically, since all software has to be approved by Microsoft, the chance of viruses would be extremely low. Is there a VSE for iOS? If not, then I doubt there will be one for RT.
A walled garden will not last long, there are plenty of antivirus apps for IOS mostly limited by what Apple will let them do .
McAfee already Have IOS security products, they also have management products like EMM.