Anyone using these? I mainly want to get them because they set 1" lower than the stock pegs. I am interested because they would relieve some stress on my back since I would not have to hunch over as much while holding onto the handlebars when standing up. Unfortuanately they are $150, then you have to buy the Ballance heel guards because the stock plastic ones won't bolt-up. Which brings me to my next question, does that mean you can only use the Ballance nerf bars, or can I use what I already have?