Not tried them myself, but have heard nothing good about them from the folks who have. Stiff, hard riding, uncomfortable, zero feedback, that's what I have heard.
FJR people that I've talked to do sing the praises of Pilot Road 2s and BT-021s.
If you can get a good $$ deal on Roadsmarts and do mainly slab riding, they will be fine. If you plan to lean the FJR any, look else wheres.