Couldn’t you just use any mouse? It’s not like the deck is limited to only controllers.

Or is the idea that you want the left controller for movement, rather than using the left controls on the deck or a full controller?

That said, I’m sceptical that the joycon mouse experience is any good on surfaces other than a table. Or even then, considering the ergonomics of the thing when used as a mouse.

Even if the sensor in it is a good one, it’s going to be bluetooth, and bluetooth mice have always had painfully noticeable latency in my experience.