MG Siegler has – much like myself – converted to using the iPad full time as his mobile workstation:

A couple weeks ago, I wrote a quick note signaling my intent to predominantly use my iPad as my main computer when I travel going forward. What started as a successful two-day experiment led to a long weekend away last week. That went well enough that I’m confident in my choice. The iPad is my new road machine.

MG went for the Logitech Ultrathin Keyboard Cover, which was my second-choice after the Apple Wireless Keyboard. He believes Apple will eventually release their own “keyboard in a cover” accessory, citing the Microsoft Surface as a potential reason/influence. I don’t think Apple will release their own accessory – for one, it’d be a bit “me too”, with several options available on the market for quite some time (not to mention following in the wake of the Surface announcement); secondly, as one of the most-touted features of the Surface, I’m pretty sure Microsoft would see their “Smart” keyboard cover falling under the “don’t copy” patent licensing agreement held between the two companies.