The laser came, its pretty cool and I didn't even know that its multi-mode.
One negative thing about it is that it came with a tail cap button even though I ordered it with the "code switch" option, not sure if its worth contacting them about it though.
I'm planning to do a review on it some time later.
The code switch option refers to the function of the buttons that usually serve as constant-on/momentary switches. When you choose the code switch option, one of the buttons will be used to trigger other modes, so you will only have a constant on button, not both a momentary and constant-on button. When you choose the mechanical switch option, you will not have the other operational modes.
The only 2 tail cap options are one with a key and one with a button. AFAIK there is no code lock option, if that's what you wanted.
I'm sure if you contact them they'll send you the tail cap that you wanted, they offered to do so for me. You'll just have to pay shipping.