Hi Tom,
Congrats on a great looking ride and welcome to the fun house.
Above 5k revs and mine gets nice and smooth below that and it's anything from a slight vibration to a full on buzz through the bars.
I have the raised bars on my bike so not sure how clip ons feel.
Looking at your pic though the Guzzi bar ends look much smaller than the ones i've got fitted. Your Triumphs look a bit bigger, try seeing if they fit.
As for the steering damper, I tried various settings but in the end found that I liked it best when it is fully wound out and not having any effect.
The V11 is a great bike to ride and not that common so people will ask you about it, i've even had people say 'Moto Guzzi' what's one of them then