Still, being able to write your own apps for it would be nice. Even if very low level APIs & you would have to handle distribution yourself if you wanted to share them would be fine. But I don't see any information about that after quickly checking their page.

BTW, a simple mobile terminal with cellular connection that you can program could be preatty useful in comparison to hacking a regular Android phone to only do what you need could be useful as well. For stuff like single use online terminals to give to field crews.