I’ve been using it since the initial release when it wasn’t even its own tool, and it’s come a long way since then. There was a release that basically flipped a reliability switch and it was night and day in terms of responsiveness, stability, availability of completions, etc. Definitely update!

What environment? It's useful enough to me that I'll try to steer clear of places where it's difficult to get reliably set up.

I've used the `clang-9` chain on Ubuntu 18.04 and the `clang-10` chain on Ubuntu 20.04 and it's been absolutely seamless.

All third party libs are custom built from source, but right now I do not remember which version of clang we use; it might be older than 9. It is a big code base,