Yep, just confirmed it - all of my TBirds have a nominal nut width of 1.5". That's a 2013 and 2015 Gibby as well as a 2017 VP and a 2016 Goth. Not sure what year the wider necks ended.
I bounce back and forth between playing 4 and 5 string basses, most of the fives have about a 2" nut. On 4 string necks I have a tendency to wrap my thumb over the fret board vs 5 string necks where I usually position my thumb at the center of the back of the neck. Usually only takes me a minute or so to adapt to a drastically different size neck. I find virtually no difference in the feel or how well I play a Jazz vs Precision neck. One could argue that I play both equally bad.