I cut my Rizoma bars down to the minimum they would go without fowling the tank with the switch gear. I had to rotate the right hand cluster a bit - it only clears by about 5mm.
For me it's a balance between the leverage of wide bars for counter-steering and the very real requirements of filtering in London traffic where narrow bikes have a huge advantage, (you ever been stuck behind some adventure dick on a BMW1200 with panniers? Might as well be in a car).
I had to reset the steering lock bolts a bit so I have slightly less lock but it doesn't effect doing tight U-turns in narrow streets. I also put my R&G bar end weights on a lathe and turned them down to only about 5mm so they still have the sliders on but reduced the width by another 40mm or so. Also swapped long Rizoma levers over to ASV so now they do not stick out wider than the bar ends. No increase in vibration or anything that I have noticed and I've been riding with the bars like this on track and road for about a year.
