Tried it for the first time last week. I was hesitant because I'm forced into SLES for work, and I fucking hate it. But thats because all of the default configs for all packages are overly secure. Like, installing apache required a ton of extra steps to allow HTTP traffic. But I needed to test both HTTP and HTTPS for the feature I was working on, so I needed HTTP.
But overall I have been very happy with Tumbleweed. I like that the packages are more up to date than Ubuntu LTS (what I was using previously), and I haven't had as many driver issues either. Oh, and snapshots are amazing. It already saved me once when I accidentally deleted the wrong config file, I just cp'd it from my last snapshot.