Oh frick, what a tempting buy! I used to have the 18500 version, best switch in the game IMHO, designed by Satburn.
You wouldn't happen to have a Defender for potential sale would you?
Crap, timing not good for me right now, going to post my 22mm MCR101 for sale shortly so I can grab a 20mm MCR. Considering any trades? Have some other high end stuff that might interest you, I'll PM you shortly.