I used Tumbleweed for about half a year 1-2 years ago. Version/dependency hell primarily between the main distro repos and Packman (the repo most multimedia drivers are installed from) was my main issue with it. You could expect either the main distros or Packman to break something between the two about once a month and prevent updates for a few days while the other side caught up. Got annoying, but those things can happen pretty easily on a rolling release.