Since our target is web and mobile applications, we have no plans in the encapsulated-eclipse direction you suggest. Of-course, since it is all opensource, a knowledgeable person would probably be able to come up with a solution along these lines.
However, our mobile efforts have already provide the option to create off-line and Native iphone applications, which are installed on the mobile device, and launch/execute without requiring access to a server. We plan to add Android support soon, and since browser support for this is devloping on all platforms, it would probably lead to the ability of using off-line Tersus applications on your desktop. Some more info on this can be found here (Youval's post), and here.
Hope this provides you with some insight.
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