Damage, Nemesis and I tried them out yesterday and were surprised at how tough they were. Aside from the occasional open-world boss, a lot of DCUO up to this point was fairly easy. This stuff was seriously pretty tough. We didn't have a healer but we thought that maybe we could go through them, like you can with almost all the other instances, if you're just careful and patient. Not gonna happen.
We also did some level 30 PvP, which I learned I really stink at. Still feels like I have a lot to learn about the way combat works and how to get good at it. It was a good feeling to have a good bit of challenging and interesting things to do. Looking forward to exploring some more of them.