The pouch for spare batteries is not actually part of the case, but is a separate clip-on item. This seemed a bit pointless to me, until I realised that you can wear the pouch easily on a belt loop even if the main case is stowed away in your rucksack.
Having seen previous comments, I was worried about availability, but that turned out to be no problem. Amazon said 'usually dispatched within 24 hours.' We ordered on a Thursday and it arrived on the next Monday morning. Perhaps Amazon have now sorted the supply problem, or maybe I have just been lucky.