Monk, there are no E10 issues or even E15 issues to worry about with your bike.
The 6th gen VFR is CARB2012 compliant, and part of that certification is the ability to operate with fuels that have ethanol levels up to 15% without harming the engine or fuel system.
There was talked all winter on my snowmobile forum about ethanol fuels and 2stroke engines, so I've been doing a lot of reading in to the subject already.
The only thing you might see, is a small decrease in power, maybe a HP or two, and a few less miles per tank as the ethanol burns cleaner but doesn't have BTUs like good old dino based fuels.
And don't go kidding yourself thinking by putting premium fuel in your tank you'll get ethanol free fuel. Search the net, you'll find that to make premium fuel they add about 6% ethanol along with other additives to boost the octane number, so even if the pump says Ethanol free, their permium will have some in it. Oh premium fuel actually produces less power than good old 87 regular does. So if your running it your stock 800 your wasting your money and robbing yourself of power.
But don't take my word for read the truth for yourself.
http://www.roadandtrack.com/auto-news/tech/premium-fuel-futures
http://en.m.wikipedia.org/wiki/Gasoline#section_3
The real reason for the push to E15 fuel is because Ethanol is an octane enhancer. This means they can mix it with lower quality less refined fuel yet still maintain the same octane levels. It's not the ethanol that is hard on your fuel system. It's the crap fuel they are mixing with it.