I use it all the time. I don't do group chats much, but I use it for 1-on-1 communication. It's so much better in my opinion because 1) it satisfies my needs and 2) I trust the provider, based on the reputation that has been developed around Moxie Marlinspike and the fact that all facets of Signal are open source. Telegram is not. Furthermore, Telegram tried to pull a quick 1 billion quasi-raise with their TON bs platform, which was a joke from the very beginning. Seriously, pull up the initial whitepaper for that platform system - total cash grab.

So yeah, @arthurcolle has used Signal, and likes it.