This was on the box of 220's I just received from MT10mm:
(https://fbcdn-sphotos-b-a.akamaihd.net/hphotos-ak-prn1/t1/1557517_650647198306649_388532074_n.jpg)
It doesn't list Glock specifically, but gives you less to complain about :P
Now will people actually look at it, digest it and know if the thing in their hand fits the description? IMO it's like many other signs or advertisements we see on a daily basis... nope :-X
It sounds like somebody was listening to the old '49er. :P