It's an example of a person over-thinking the problem, considering the multiple solutions already available --
- Netbook or Air
- Tablet or iPad
- Small and light laptop
Seriously, once you add in all the miscellaneous nonsense you'll need to deal with in getting such a homebrew solution to work, it just isn't worth it. Because, after all, isn't your time worth something? Great, take your hourly rate and times it by how much you're spending researching homebrew solutions and then actually getting something to work to your satisfaction.
Any business traveler who doesn't know how to pack light should instead invest in some time learning how to pack light. I carry a netbook and carry-on internationally and it's never been a problem, weight-wise or otherwise.