Confirmed... I have had a few domains registered with Dreamhost even while my hosting account was closed, and you could set the nameservers to whatever you'd like.
I personally think Dreamhost makes a super fine "domain registrar only", the price is right with the included privacy and you know the support will treat you well if you need them.
"Whenever you find yourself on the side of the majority, it's time to pause and reflect." - Mark Twain