Works great on both Switch and PS4!
I bought this because I love the Switch Pro Controller and really wanted to use it on the PS4 as the Dualshock doesn't feel comfortable for me after awhile. Instructions were all in Japanese but it was all pretty intuitive to sync up. Just press the big red button until it flashes then hold the Sync button on your controller and you're good to go!
The converter also features Turbo and button remapping functions. I haven't tried these functions as I am happy with the default settings. Occasionally during gameplay my controller drops connection and it takes a second to resync. I don't think it's an issue with the converter though which is why I still rate it 5 stars. It could be something blocking the signal between the converter and the controller, or maybe the distance I'm sitting from the console. Either way, it happens pretty infrequently so it doesn't bother me.
I was also able to successfully connect a Dualshock controller to the Switch. There's a few things to know to get it to work, but once you change the settings it works flawlessly. First to sync the controller to the converter you need to hold the Share and PS buttons together, the lightpad should flash and then sync after awhile. Next I found you have to change under System Settings > Controllers and Sensors > Pro Controller Wired Communications and turn that option on. Then the Switch should be able to find it when you go to "Change grip/order."
