HD, I can vouch that there are more AC controllers using RoDs from time to time, either that or "be level in x minutes", both work just as good. They are being used quite regularly by some of our European colleagues too instead of actual level restrictions which I doubt we will ever understand why.
I would never give a speed instruction and a RoD as it would be far too easy for them to compromise each other. I'd pick whatever was more important and then coordinate whatever can't be done without the other.