You know, for us Sami owners there is possibly another option... Sky used to make a doubled Sami case. They stopped making it due to lack of interest. They probably still have the castings.
It was a new front case half with Trackick gears. Basically it was a simplified version of the Kicker3 without using the Trackick trans. It was still divorced. Had 2 shift levers. Worked on the stock Sami mounting. No transmission tunnel mods except for the extra shifter hole.
Maybe if they get enough calls about it they might start building them again...