HTTP2 support sounds really exciting. 

> Please let me know if you have any issues, as well as if you don't! If everything works well, that's a good thing for me to know :)

I played around with this today and found out that the command you recommend:

>  pip install -U https://twistedmatrix.com/Releases/pre/16.3.0pre2/Twisted-16.3.0rc2.tar.bz2#egg=Twisted[http2,tls]

does NOT install dependencies when ran on Python 3, I had to manually install h2 to HTTP2 support to work. It works ok on Python 2. My installation logs on Python 3.4 look like this: