I swapped my handlebars also. For those who might be interested, this is what the underside cover looks like after the minor surgery to make it work with the clutch lever and cable. I found it pretty easy to do - 2 snips and a little dremel work to smooth it out - and for the most part, you would never know it's not a factory job. You lose 1 screw attachment point but it makes no difference.
I have thought about the Rivco floorboards and heel/toe shifter but haven't pulled the trigger on that mod yet. Instead, I opted for a comfort seat which did move me back and took the pressure off of my tailbone which resulted from the more upright position of the RT bars. In general I am very happy with the changes.
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