I was looking for the exact same thing a couple of months ago. A tpf'er suggested I get the pouch tha goes with the damier marais. You can buy it as a replacement from 866, and it was only $140. Looks just like the reg. pochette only without the strap, and it's just an inch smaller. I mostly use it in my bag, but recently just bought a strap for it. I love it so much, and wish they made this size in all LV lines! It's the perfect size!
I'll look to see if I've got any pics on my computer to show you.