I put both on my '08 FLHT. Never took the wing deflectors off. The soft lowers work great for the money, I put them on when I went on long trips and temps were less than 60 degrees. I've got both items for sale, give me a ping if interested.
Scott in IL-'13 Road Glide Ultra-the new Mistress
Scott in IL-'13 Road Glide Ultra-the new Mistress