I have not seen the larger version here in Californiahonestly I thought that is no longer in production because of the GST style, I have only seen the petit version (like Nathalie's) @ Chanel Boutiques as well as the dept. stores.
I would also love to have the larger version. I've asked my SA about it and she thought they maybe will bring them out again next year, fingers crossed.
I found a brown one on eBay, but it already has been sold:
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=180184573478