Truth is I can wait to tour on the SAS. The few times I've put the cases on it, set the suspension to Comfort, and the throttle to Street, it has been the smoothest riding bike I've ever experienced. I have zero hesitation to take this bike cross country. Really excited to do it.
Worst mechanical issue I've seen so far is when I'm told the key has left range of the antenna. I find that is easily corrected and never really been an issue. There is an annoying warning light on now that I've gotten within 1000 miles of the 9,300 mile service interval. I haven't tried all that hard to see if I can get it to turn off. I figure it's only going to be on for 2 or 3 rides, so just don't care.
I would never say this bike can't break down. I will say my level of forgiveness has gone off the charts. If it all of a sudden it became untrustworthy or unreliable, I would still find it almost impossible to part with. The last 9 months and nearly 9K miles has been the most entertaining, crave inducing, satisfying, local only riding I've ever done. If I didn't trust the SAS to go long distance I'd buy a gen 3 Tenere for travel and keep the SAS for entertainment. Right now, I don't expect that to ever happen. But never say never.
As for the chain...sure that part sucks. But now with the auto-oiler and the chain being past the initial stretch, I can't say I think much about it. I look down, make sure it's not overly loose, or dry and that's about it. I'll always prefer a shaft, but if I can only get this level of performance, and unparalleled entertainment from a chain drive, it's well worth the added attention. I'm getting rewarded for the effort.
I keep wanting to get my 690 out for a ride, but when the choice comes down to the SAS or the 690...it's nearly impossible to pass up riding the SAS. It just makes me sound like that last reviewer on the 21.