This is theoretically possible but not very easy. Our conversion script is too user-unfriendly and undocumented for distribution, but the BattleTac client is able to use the output of MSR MapCruncher directly. You have to create a cache.conf text file in the resulting Layer_newLayer directory and describe the type of the map, something like this:
version=3
format=mapcruncher
This method is not tested and unsupported yet, but feel free to ask. and please report your experience!
I have attached the documentation of the mapping library we use, you can find more info about using MapCruncher output as a stored map.