A buddy of mine has an 08' RG and has the Clearshield - "don't waste your money" he told me. My HD dealer has a Clockwerks that was returned - didn't work. The wind is coming from under the faring and above faring remedies are a waste of $$$$. Try riding at 63mph - no wind. Gale force at 65mph. My passenger take a bunch of the buffeting off me. Waiting for somebody to make clamp-on fork tube diverters. Might try the kind that comes stock with a Victory OR just be happy at 62mph........anyway, still the best ride I've ever had.
You are absolutely correct in that most the the wind comes up from around your knees, A different windshield can help a little bit, but to get the best results you must add lowers to the mix. Between the two, it ain't bad at all.