actually, the tank range is 125 miles with about 10 more on reserve. With those clip ons, you wouldn't want to do many more miles anyways
I enjoy the rorty, torquey character of the parallel twin and love the sound it makes with the Triumph aftermarket peashooters
but, it's definitely a poseur's bike That becomes evident when trying to keep up with Martin's goose. The Guzzis are oh so stable while cornering while the Trumpet feels like a bit of a bicycle. Maybe some upgraded suspension might help.
That said, when left to it's own devices on narrow, English backroads, it performs reasonably well.