Howdy
I have a CM that was done by Seecamp. I have never heard of or seen a Swenson conversion. If you have papers to verify that it would be a REALLY neat gun as many people credit Aramand Swenson with some of the first "chopped & channeled" 1911 .45s. In my opinion a double action .45 without a decocking mechanism is kinda pointless, since there no really safe way to decock and carry on a hot chamber. Sounds like a cool gun to have, thats why I have mine!
Hope this helps!
L8r
Conley Janssen
USMC 87-93