I personally wouldn't call the HD neck vintage sounding at all.  It's lower output than I expected, but it's very clear and bright and jangly and perhaps lacking in bass and mids to some extent.  There's no mud there at all (which is a good thing), but otherwise it's not voiced like any "vintage" neck humbucker that I'm familiar with.  In that sense it's modern to me.  It almost sounds like a middle pickup or something, not like a neck pickup.  While it sounds good I eventually decided that I wanted something that's more of a traditional "neck humbucker" sound.
I have not played a Riff Raff.