Hmm I dunno about that. I'm under the impression that a lot of people on the forum bought the roadster because it's a badass street bike that's very capable of longer runs. In fact the most common feedback for 'Should I get a Touring or a Roadster' is 'Which do you like the looks of better? Pegs are a little cramped on the Roadster if you're a taller rider'.
That said I did my first long trip from Denver to OKC on my Roadster:
1) Gearing hasn't struck me as an issue, even had problems with speed creeping up without me noticing it.
2) I wouldn't have the endurance to pull off the fly screen. I have an MRA screen and it reduces blast just enough to make me feel like I'm in the wind without exhausting me.
3) Highway pegs are definitely a must.
4) I got an Airhawk before I took off. Waited to put it on at the first fill up, then took it off at the next and kept up the pattern. I won't say I was 100% comfortable the whole time, but it helped out a lot and is waaay cheaper than a new seat. Especially since I don't have the opportunity to test a seat out before purchase.