And just because it has a sticker on the pump saying "may contain up to 10% Ethanol" don't assume ANY accuracy on that statement as far as the station operator is concerned. I have read reports of fuel in tanks being checked for Ethanol and finding 15% and higher at pumps labelled as 10%. Better to avoid all Ethanol when possible, especilly if your bike will sit idle for any length of time.
If you are buying fuel and intending to use up that tank of fuel within two weeks (depending on where you are in the country) then other than lower fuel mileage using Ethanol is no big deal. But if your bike sits for weeks unridden I would not allow any Ethanol blended fuel to sit in the bike.