Going to revive this old thread by answering my own question...
I ended up getting the Masuri E Line Pro wheel bag, but after using it a couple of times it's just not what I need. Too big for the tiny changing rooms we use, and we don't play anywhere nice enough to have nice flat tarmac to drag it on! So it's going.
Instead I got the Scott Wheelie Duffle yesterday and it's spot on. Jonny's video shows you all the well-thought out aspects, which I love. And it stands up well on its own so my team mates won't hate me, apart from the lack of runs.