I like your modifications, your bike looks great. Your right about the grab rail. Sometimes I feel like that space needs filling, but seat has a great shape and I have always liked the look of a grab rail.
I have the tan version of the solo seat. I love it as it keeps me away from the heat of the engine especially in the heat of the summer. Now that it's colder, I've put the stock seat back on the bike so I'm warmer as I commute to and from work in the DC/Metro Area traffic.
I'll swap the seat back in the late spring/early summer.