I can't remember where I saw it, but I'm pretty sure the rear crossbar is fixed, and the front crossbar can be mounted in two positions. Hopefully they'll eventually offer an additional crossbar as an accessory.
Then you park on the street and don't worry about it.
That's what the MGV interior is for. For those that don't get MGV, I strongly suggest seat covers. It will get rained in.
They'll just have to deal with it.
All of these problems are the same if you remove the entire top. You just gotta make...