Timely questions. This is fast becoming an all time favorite for me but it took a bit of tweaking. (As opposed to twerking)
The stock seat is indeed slightly smaller and is lower than the Tenere. It feels smaller than it is because of a bump projecting forward from the back seat, as I've mentioned before. As mentioned two posts up, the ($300) optional high seat has taken care of that. I can go for hours now and enjoy doing so.
Definitely more road oriented than the Super Tenere but fine on gravel and easy dirt. Really like how easy it is to inhibit the ABS/TCS with the OFF-ROAD mode.button. Can even go in and set custom levels for each. Biggest negative is still the stupidly high idle of 1,300 rpm, which means it clunks heavily when going into first gear. Mostly gotten used to it but still kinda bugs me. (and others)
The PFF ones with optional radar can have the quick shifter. Had one on the Triumph and tried it on a Stelvio and it just doesn't do much for me. Guess I'm just too ingrained and besides, if not hammering the throttle the bike shifts fine without the clutch.
Added a few things over the last week or so, including aux lights, Hella horn (a MUST have), Top box (still from Tenere), GPS mount printed by my son from "Thingiverse", radiator guard, and tape to keep junk out of the radiator.
All in all so far, it's a keeper.
Horn and radiator guard. Note below that the Stelvio blocks air from coming up thru the fork area to create a quieter pocket for the rider.
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Tape on rad guard and engine case does not affect cooling. (Want a $kid plate)