I just read about this on Tea Nerd and decided to give it a try (after further research on wikiCHA.)
This is a really nice way to brew. Simple, interesting to watch, tasty results.
The only cons I would mention would be having to strain the tea through your teeth when drinking. Though that's not a big deal to me, I don't mind eating a few leaves really. Also, after taking a drink, the leaves tend to stick to the side of the glass, and you need to push them down. I tried to persuade the leaves to rejoin the collective by swirling the remaining tea, but succeeded only in splashing myself.
I brewed a no name green, nothing fancy (so if this completely sucked it would be no big loss.) Happy to say, the precautions were unnecessary.

Anyone else ever try this? Thoughts? Opinions? Suggestions?