Interesting. I’m afraid I don’t know enough to say whether 18ga is enough to power the DeWalt. I would think that if it’s not, it’s not your DeWalt that will be ruined, but the wiring. I do agree that it would be nice to have a quick disconnect for the DeWalt. I have my DeWalt and laser mounted simultaneously, I would need another solution anyway.
Anxious to hear how it works out for you!