Yes, the Slime Speaker Stand works with the Nintendo Switch ⊟
If you’ve been holding off on buying one until this important update, allow me to confirm: you can buy a Nintendo Switch confidently. It will work with the Slime Speaker Stand Hori made for the DS.
I rushed to test this crucial accessory after seeing a report from @jnmario959 that the Kid Icarus: Uprising stand also accommodates the Switch. And it works well enough, with a couple of caveats. First, the Switch is too wide to fit within the little guides on the sides of the stand. So it basically just sits on the stand without being secured. But it sits well enough to use -- especially if you’re playing with the controllers detached!
Second, it’s not really possible to get the USB-C charging cable in under the stand, so you can’t charge and play at the same time.
Even with those conditions, I’m confident in saying the Slime stand works better than the built-in kickstand, with the additional benefits of an external speaker, multiple viewing angles and It Is Shaped Like A Slime.