I have been using Neon as my daily driver on my Oryx Pro (which is my desktop) for sometime now. I have tried switching a couple of times other distros but seem to keep coming back.
Neon is a good mix with the LTS base and the getting the latest of Plasma. I really have not suffered any issues with the rolling of the desktop. Occasionally, what will happen though is after a a big update I might the logout screen might not work (could be an nVidia thing, not sure), but the simple fix is just switch to another vt like ctrl-alt-F2, then reboot from there. Once the system reboots, everything works 100%. As, I said that is intermittent.
The updates themselves are not jarring and tend to be the subtle improvements that just make the desktop a more pleasurable experience to use. The big think to note is that while you may use apt or apt-get to install software by command if you choose, pkcon is the command updating the system.