Latency is never a problem in my experience unless you're mounting in resources from a different continent, where ssh is slow anyway. Even in those cases, the UX is closer to mosh, since rio remains local.
In general, plan 9 is fast. Compiling all of userspace and the kernel tanker just a couple minutes on my 11th gen Framework. Grepping a large repo also feels closer to ripgrep than gnu grep.
One well-known user runs his home network and automation system all as a 9grid. He even frequently shares details on his YouTube channel adventuresin9[0]. It's binge-worthy IMHO.
It's hard to convey how cohesive the whole system is. It's ridiculous how many things are reduced to trivial shell scripts, and the source code is so darn grokkable, greppable, and small that treating it as documention is actually sensible. Granted, this is almost necessary to become proficient in Plan 9 since there are so few network effects producing StackOverflow answers, blog tutorials etc.
Anyway, I hope you do end up jumping in!
[0]:https://www.youtube.com/channel/UC7qFfPYl0t8Cq7auyblZqxA