Thought this through a little. It seems to me that I would be best off to drop putting any effort into Jammer Live at this time. I see it only has 2 fills and uses their styles only.
It seems to me that as a start I should concentrate on the basics of OMB and Live-Styler.
Since, as far as I know, only OMB allows you to take parts of different styles and midis and make your own personalized styles, that maybe I should try this first, even though the look of the virtual kb control panel of the Live-Styler appeals to me a lot.