I realize this discussion is slightly out of date, but I've just come across it. My company, Cardinal Solutions, is a gold level Adobe service partner and we have a special "LiveCycle-SharePoint" connector that provides two way integration with the two products. If you are interested in discussing some of the functionality and some possible solutions, send me an email.
Thank you!
Ryan D. Lunka
Cardinal Solutions Group
rlunka@cardinalsolutions.com