By all means, set up your inferior axe to open tuning (there are many). This eliminates re-tuning/de-tuning routine. Go for it! The overdrone is avoided by using the dadgad only some of the time—mix it up! Mudcat's an awesome resource—you're guaranteed an opinion [sometimes several] and, more often, good solid info from a wonderful community.
. And if you want to hear dadgad ~ that's what utoob is handy for. Good luck.
keep on pickin.   Dennis