I've been using it across a few devices for a couple of days now, and the transition was smooth and easy. The windows version was able to take all the info off of firefox and apply it to waterfox. The android version didn't seem to have that feature, and it was not available to download in the playstore, so you have to go to their website to download the app. (I mention this because there is an obvious counterfeit version in the playstore) Anyways, I like waterfox, and for what it's worth, I would recommend it to anyone who wants to get away from firefox.
What are other goats using out there for browsers? I have not tried pale moon, but I have heard good things. I tried Brave, but I didn't care for it as a day to day browser.