FWIW, you're not going to find bar-ends with friction shifting/Index on most current production bikes other than touring rigs; the idea is that even if you take a hit to the derailler/etc you can still change over to friction mode and have a usable range of gears. Indexed shifting is far less tolerant of misadjustment or damage.
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Knows the weight of my bike to the nearest 10 pounds.