I do some light touring out of a single T-bag on a M6R and favorite mods for that are: -12%/44T chainring, Alphabet Cottage mini clips, Ergon GP2 bar-ends, backpack strap for the T-bag, and X-roller. For me, the M bars w/ bar-ends are good for an additional grip position, but don't really change back angle, so I rigged a aero 'drop bar' grip in the bottom of pre-'17 M-bars which adds comfort and efficiency. Not crazy about how the P bars looks, but I think it's going to be the most efficient, and comfortable (varied positions). I'd like to do the double chainring mod.