I used the app for a Sametime meeting room meeting with one of my staff this afternoon. From my iPad, I was able to share a document I had pre-loaded in the meeting room with her and she was able to share her screen and I was able to see it just fine. We used Skype for audio; I used Skype on the iPad. Sweet!
Short movie shows you how you can use the app for IBM Sametime on your iPad: http://youtu.be/JIx1uRXCS3o