Just a quick summary after some time with the Instinct vs two years with the Suunto Traverse Alpha.
* Instincts UI is less intuitive but more responsive and way more versatile. Traverse cycles through different screens (i.e. timer, stopwatch, moon-phase with dots indicating where in the loop you are) while Instinct needs you to remember which button to press to get to a certain function
* the configuration of the Traverse sports datascreens is more comfortable but needs a browser and internet connection
* background light of the Traverse is more flexible (white and red versus only white) and the flashlight is brighter and more intuitive to access (long press of light button). I also like the "long-press-preview" of the Traverse (i.e. you long press the light-button and the Traverse displays "Turn on flashlight" while filling up a ring clockwise. If you leave the button early, it cancels the flashlight, same goes for other functions you invoke with longer button-press)
* display of the Instinct is better and requires less light, it has an contrast like e-paper
* Instinct is lighter and quite comfortable to wear 24h, I usually took off the Traverse at night
* More sports-modes on the Instinct (is there a limit?). I managed with the 5 available sports-modes on the Traverse but it was always a bit tricky
* Import of GPX files requires BaseCamp (or a browser) on the Instinct (+cable for sync), just a browser for the Traverse (and internet for sync)
* Navigating a track has more options on the Instinct but on the Traverse it "just works" (i.e. the Traverse just automatically zooms and I hardly missed more options), generally the Instinct is quicker and more responsive while the Traverse had sometimes lags
* Not quite sure about navigation on the Instinct but on the Traverse one could choose between navigating a (previously loaded) track, to a waypoint or a past log-entry (the latter seems to be missing on the Instinct)
* the Instinct can connect to ant-sensors, most importantly (for me) the tempe sensor to allow accurate temperature readings on tour
* the charging connector on the Traverse looks more impervious to dirt/... while the Instincts cable is smaller (I'd rather not try to charge the Instinct while hiking, wrong angle on the cable as well)
Hope that helps peoples decision making ;-)