Multi-window compatible office/pdf reader apps

[foot_loose]

I'm planning to switch from S3 mini to S Grand because the latter has multi-window/dual screen feature and it's cheaper than, say, Note 2. However since I sometimes need the phone to do my job, i would like to know if office apps like CloudOn, Evernote, OfficeSuite Pro or Polaris Office 5 are multi-window compatible in this device. Anybody knows?