I can already put the device out of sight. I want a tiny case because it takes up less space in whatever nook I store it in.
To add on that- there are several other reasons why this makes sense- if you have solar power, batteries, and a regulator, it makes sense to go straight without going to AC in between- it's one less place to lose energy.
this seems like a very niche use case. I would imagine most home solar installations are wired directly into an inverter to supply AC to the house. how many people would have both DC and AC outlets in their wall?