I mentioned that you can create a DADGAD-like sound quite easily without learning anything much new. Here's a little tune linked a the bottom that I was messing around with when I got a spidercapo (£5ish off ebay so not a proper branded one but I thought I'd just have a try of one - two are even more interesting. Here's an example of someone playing with two in an Emaj13 tuning).
The guitar is tuned normally and the tune is just a standard D shape and an A shape with a few other bits and pieces. But it does have a sound that is not dissimilar to DADGAD but without the bother of retuning :)
I'll finsh it off sometime but it's a quick example of how to play mock DADGAD (there are lots of things that you can't do that you can do in normal DADGAD though)