I have them on mine, very uncomfortable ride imo...i'm removing them soon.

 

I have them on my bike and love them. But I am also 6 foot even so it works a little for me. I originally bought the bike with drag bars but immediately changed those. For my height the keystones work great, my hands literally rest on the grips. For you I would either change the risers or get a reduced reach seat and you'll be set to run those bars.