Dave,
The Rotella T6 has the JASO MA certification but it's full synthetic. I used that in my Tiger 1050 for 40,000 miles changing it every 2500. I even sent it out to blackstone labs to have it analyzed and it worked fine.
With how little oil this bike uses I'll probably stick to a motorcycle brand as the cost difference won't be much. The Tiger used 3.5 quarts per change.
My Moto Guzzi uses Unicorn blood at about 20 dollars a quart and you need 4 per change. 10w-60 isn't easy to find!