If both Switches share the same profile, they both have access to the same HOME.
Just deposit on one Switch, then withdraw on another.
Also, HOME allows access to other profiles save, so even if your Switches don't share profiles,
you can just share profiles now. This works even for the free version.
It's hard to know for sure that streamers use a modified switch, unless they show Homebrew or Boot on stream.
In any case, you can do it, but you run the risk of being detected by the servers. Use at your own risk.