Just out of interest, a play a twin neck, with the 6 in DADGAD and the mando in GDAD.

It's good fun playing on one, and letting the other resonate, and to jump from one to another in a song!

Back to the start of this thread - don't see how you can have a con from a tuning - only how it's played.

I've used DADGAD for 10 years, but use lots of others aswell.