I'm very interested in the Carbine, and will probably try one out sometime this week or next week if I can find one locally. However, I'm wondering about the optional vinyl rack case for the Carbine. From what I've read, it costs $150. Does it have a handle on the side or anywhere else? I can't tell from the pics on the website. Is it a quality rack case? Alternatively, does anyone have recommendations for other small lightweight 2-space rack cases or bags? Thanks!