I have one connected to my Television, but it’s a hassle for games to unhook for games I want to play on the monitor for better latency like rhythm games.
I had heard of some third party ones potentially damaging switches back in the day, and wondered if they have improved since then.
Well it’s a good thing the max draw of a switch is 18W, and this device has a specific 9V power profile for the switch. The 30W is there to support devices with a faster power delivery spec (such as the Steam Deck).
Genki themselves have been the ones to identify the shoddy implementation of USB-C PD by Nintendo: https://www.reddit.com/r/NintendoSwitch/comments/ckaiiv/an_engineers_pov_on_the_3rd_party_dock_switch/
And while Genki addressed the specific issue of power switching and cross signaling with that one specific chip, they didn’t address the USB-C protocol errors the Switch reportedly has. Having a charger physically able to output more than 18W has a residual risk of frying the switch, since the switch is not guaranteed to negotiate PD correctly.
I know this is an emotional topic coming down to either “I never had my switch bricked!” vs. “My switch was bricked by wisps!” and I don’t really care what you put into your switch. But if one would want to be safe, only the original charger/dock is guaranteed to work as expected.