I tried it for a week hoping to reduce the amount of swapping my laptop did during a normal workday. It wasn’t any better than chrome unfortunately and due to the lack of workaround extensions like the Great Suspender it was actually worse.
A couple of hours ago, I've had about 25 tabs opened, about 20 of which were suspended. Just for the heck of it, I've checked the memory usage of Firefox. 500 megabytes.
[0] https://addons.mozilla.org/en-US/firefox/addon/tab-suspender...
Will probably try again in another 6-8 months. I have problems with Chrome eating tons of memory, hoping the new FF gets a lot leaner (and robust) as their newer tech gets integrated. Plus, the blog posts on their usage of Rust are really fun to read!