damn, that's super dope.
The way that skis/snowboards are designed you would most likely have trouble with bindings if you mounted ski bindings on a splitboard. There is normally reinforcement under where you mount your bindings to help prevent them from pulling out of the skis. That could result in a pretty sketchy situation deep in the bc.
The other issue is keeping the boards together. With split snowboards the bindings help hold the board together. The bar system that the people at the link employ mitigates this problem so if you were doing a custom ski you would want to do something similar.
Basically, it could be really sketch if you just do this on a snowboard.
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