I've got almost 3500 miles on mine and it has been doing the EXACT same thing for about the last 1000 miles. I didn't overfill it at last oil change...the service guy said I'd have to bring it in so they could dig into it.
It's NOT the case cover gasket. It doesn't lose much oil at all. Oil is definitely coming from up high (air box perhaps). My shop is booked up until early September, so we'll see then.
The service manager said I should be ok to ride it as long as it didn't suffer performance wise, and provided a kept an eye on the oil level. He said if there are any serious issues just take advantage of the roadside assistance. I don't plan on parking it, that's for sure!
Let me know what's up if you make it by the shop before I do. We'll compare notes.
Hers: 2009 Suzuki C50SE - Cream and Green
His: 2012 Victory XCT - Big Red