Did you read the articles on tablet use by lawyers on tabletpcbuzz? There was also this great blog post on the subject: http://www.legalunderground.com/2004/08/tech_tips_for_l.html
Do you know of any other sites/articles/blogs etc. specifically about law students & lawyers using tablets? I found a lot about using them in engineering undergrad (and I would have loved to have one back then!)... but when it comes to law most of the comments I have seen from people on LSD and other websites tend towards the conservative side.