I just tried termshark a couple weeks ago. It _was_ just like wireshark, which was nice. However:

* There's a "screensaver" which activates after a couple seconds and requires extra button presses to get back to real data

* In several sessions the TUI output got corrupt

* It has problems with remembering field expansion - I'd expand one field and it'd expand all the other fields after a second delay, while looking at the same message even.

* It felt pretty slow to start up

* I felt like I had some issues with filter accuracy

But it got the job done and most issues were easy enough to work around.