Apple has a slight advantage over RIM when it comes to video conferencing, since it already has its own proprietary video-conferencing application and service, called . But RIM must have some sort of video-conferencing offering up its sleeve, so we'll very likely see a related BlackBerry-announcement in the days or weeks following the PlayBook's release.

The following speculation should be taken with a grain of salt, since it is just that: speculation. But the BlackBerry PlayBook tablet will very likely prove to be more durable than the iPad 2, due mainly to the smaller size of its display and rubber-like outer casing. And durability will surely be an important consideration for enterprises, especially those with remote workers in less-than-forgiving industries and environments.

In general, the most vulnerable part of a tablet PC is its glass display. And the larger that glass display, the larger the likelihood that the display will be damaged.

I have not yet handled the iPad 2, and as such I can't really gauge its durability. However, I have spent quite a bit of time with pre-release versions of the PlayBook tablet and it seems much more durable than the first generation iPad, which I've also had time to handle extensively. The fact that the iPad 2's display is very similar if not exactly the same as the first iPad's screen makes me think the two models will be similarly durable.