Running your oil level half way down the stick? I have seen a lot of airheads and oilheads run completely out of oil. Don't bank on the oil usage leveling off. I know a lot of people report just that but I have never seen it. All my bikes will go down to the half way mark and then go down from there even faster. I understand the logic behind increased crank volume due to lowered oil levels but . . . . I have seen a lot of beemers run completely out of oil. Keep an eye on it!
I just re-read the service bulletin on the subject. The last paragraph I believe on the subject makes no sense whatsoever just like many a BMW service bulletin. Less oil volume makes no difference at all? On planet earth?