I've seen a few threads in regards to roof racks and hard storage containers. But I'm curious about cargo bags. I have a Mont Blanc rack coming in today (mainly to carry a double jogging stroller), for my R53. It would be nice to have additional storage (for myself, wife, and young twins), on occasional trips (mainly a 13 hour trip south in a few months). Other than $300+ for a hard shell, how do the bags work/hold up? It would also be nice not having a coffin cluttering the garage the remainder 300 days of the year.