Seems no one is interested in this topic
However, I am trying to setup LAMS+Moodle and see how its different than moodle native lesson plan. Setup is complete and integration validation works but when I try to add a LAMS activity I get an exception which I have posted to lamscommunity. Let's see how it goes, I will keep you posted on my findings.
btw, you can find lams integration discussion in below thread.