Flowboard - presentations on iPad

Flowboard is a presentation design app for iPad. In the TechCrunch video below, the company CEO gives a quick demo of the product.

I am curious to hear your feedback on designing presentations on a tablet in a new app (using an iPad to display them is a no brainer). I can see the advantages of mobility, the touch interface, but on the other there are drawbacks: screen size, lack of navigation precision, incompatible file formats, and file management problems.