The old XRL is still drinking a little oil everyday. I added about 800ml in the last 2,000 mile stretch. I've started telling people that when I pull over at the gas station it's to fill up the oil and check the gas.
FWIW, I don't think you have a problem with oil consumption. Mine used about that much when I was commuting 600 miles a week on it. (the bike at that time only had 2000 miles on it) I think air cooled engines are a little more prone to this anyway. When you get home, maybe have a look at the valve seals, otherwise, feed it a little oil now and then, and it will never die.
Keep it up!