Seems like a solid option if you're in that dual-EV situation.
I haven't personally used the EVDance Tesla to J1772 adapter, but I've heard some chatter about it online. People seem pretty happy with it, especially for folks who have both a Tesla and a non-Tesla EV and want to use their Tesla charger for both. The big plus is convenience because there;s no need for two separate charging setups.
I'd recommend checking out reviews on forums and YouTube to get a broader perspective. Things to look for are how reliable the connection is, how well it handles different charging speeds, and if there are any known issues. Also, make sure it's compatible with your specific Tesla charger and your non-Tesla EV.