Yes, had my VSM's upgraded to MXe's some time ago. Being "relatively" close to the Merlin plant, my wife and I got a tour out of it as we drove them there and picked them up. Bobby's a great guy, (as everyone with Merlin's knows), and it was fun to see speakers in various states of construction.
Definitely a very worthwhile improvement and something I'd recommend for anyone who hasn't gone for it yet.