From reading the forum and webpage, I am getting somewhat mixed messages about the usability of UBports on the Nexus 4.
I am currently still running the "Official" Ubuntu system on it which works fine but clearly is unsupported. However since the N4 is my only phone (well there's an old OpenMoko in a drawer somewhere), I am rather hesitant to dive in and re-install without at least a few reports of success. Equally, since I am a very light user I don't feel inclined to pay large sums for a newer phone (and I find Android's barrage of unwanted marketing guff unbearable).
The original Ubuntu install was done using the ubuntu-device-flash tools installed on Manjaro Linux, which would be my intended route again (the only Ubuntu machine I have is my work PC which is still on 14.04).
The things that I need to be able to do, aren't that extensive: Install, make & receive calls, receive & send texts and run the stopwatch app. I wouldn't regard other limitations as showstoppers.