I did a really simple conversion: I hook the pouch on the chest-piece itself, using a "electricians strip" (not sure what the English term for it is...).
Basically, I cut some holes on the back of the pouch, slide the strip in, and secure it. But not to tight. Then, before I put on the chest piece, I just slide the pouch onto it at the right spot.
Don't have any pics, but I'll try to get some taken at the next event.