Yes I use DADGAD a fair bit and have done for a long while, hearing Richard Thompson use it for 'Banish Misfortune' and others was a big turning point for me. As others wiser have commented above the thing is not to overuse it and not to keep pounding at the bottom D! That can get tedious !
DADEAE is another one worth playing around with as there are some great sounding chordal voicings in there but the thing to do is experiment, it may not always sound 'right' but often you'll find a tune in there. The most important thing is to enjoy it.