I'm really sorry to hear that. One of the forumites here, DrunkenWhaler, recently got a chance to play at a show so he could tell you or a dev might pop by that can answer your question. I'm not sure if you can re-edit a topic title, but if you can I would put the tag "Medical Necessity" and "Question". I know someone would come by then. If you're on Twitter, you could also ask Harvey Smith. I'm sure he would want you to have a comfortable experience. His ID is Harvey1966 I believe, but I'm not sure since I don't use Twitter. A frequent visitor here, StrifeCross, has asked Harvey questions frequently so he would definitely know. By the end of the day you should know one way or another. I hope you're able to find a control scheme that's comfortable.
Actually on that note, the customization options have been very thorough. What sort of control scheme works best for you usually?