I had a Minoura Space Bar and now a Swing Grip (the space bar broke and was replaced free of charge for their current model - thanks a LOT to Urbane Cyclist).. I had it on my mountain bike shortly after this pic (below), and had both of my headlights mounted on there, leaving a lot more 'room' on my 'dash' for just the bell near right shifter and my computer. It wasn't super cramped, but my bars have the bend in, which makes for cruddy angles on mounted stuff. Right now, I only have the silver schwinn light on there, as the PB5000X is on my roadie and don't even have the swing grip mounted.