Changing bag for two in cloth?

Does such a thing exist??

I have spent many an hour trawling the internet looking for a big enough bag for when No2 arrives at the end of the year and I've come up with nothing.  Well, that's not strictly true, I found the Pink Lining twins bag but that's the only one.

I love Pink Lining bags, I currently have a navy bow yummy mummy, use it daily and it still looks gorgeous. It was my treat to myself from my last full wage packet before maternity leave. Can I justify spending £90 (which I don't have) on another changing bag? Is this bag going to be big enough?

I can't help but feel there is a real gap in the market for changing bags designed with cloth nappy users in mind. I have so many features I want the bag to have but cannot find anything with them all on.

Perhaps I need to start designing my own, hmmmm.........