Pockets on the side can carry mic and a small end fed antenna.
It's a snug fit and won't allow operation while inside the bag.
I've been using 3S LiPo batteries from a quadcopter and one of these might almost fit in a side pocket.
These bags are $20 at Fletchers Fotographics in Chatswood. The price seems better than online so perhaps they're running down the stock.