Although I'm not exactly sure why, but there is some indication as to a direct correlation to MPG stats from those that live in lower altitudes to higher. The F series SV here, Injected, rarely ever evens see 55 or so mpg. Even a well tuned Carb bike is usually in the mid 40's. As you know a lot has to do with how you drive. Here on Fuelly
Suzuki SV650S MPG Reports | Fuelly you would be way above the average. Definitely keeping your cruse rpm within just below the peak of the cam profile helps the economy aspect. Going up a gear in the front is a good 500rpm drop. I will be taking a trip in a few weeks which will put me at about 2800ft so I'll be curious how I do. I suspect I wont do any better if in fact a bit worse and I have no means to re-tune without some difficulty.