Steve,
I was taught that "intoxicated" with relation to CHL fell under the same level as "Public intoxication" so it would be an officer's discretion. In other words, and with regard to CHL, the only option is ZERO alcohol if carrying, NOT the Legal driving limit!
I certainly hope you are not teaching people they can have a couple of beers and still carry...
![eek6 :eek6](./images/smilies/eek6.gif)