Having just received an AX in a trade, I must say that I'm impressed with its fit and finish as well as its ease of use.
The extra 10mm of focus extension is great for macro work and the autofocus is a welcomed bonus that Leica can't match. Granted, the AX's autofocus works best in bright light, but manual fine-focusing is very convenient under tough conditions. This is being written many months after the OP's query, but I just felt like adding my two cents.