I'll second the recommendation of Koso Apollo grips, they're elegant, simple, and functional. Instead of Dremelling off the throttle tube ridges, I found a replacement tube that fits and doesn't have ridges: Motion Pro 01-0094 Throttle Sleeve; less than $10 on Ebay or Amazon. Also, I wired the grip power wire to the wire that controls power to the headlight, so it powers on only after the engine has started.
What did you do at the ends- drill the sleeve and caps to accept the factory bar end weights, or go with the Koso end caps?