Okay that's cool, you're basically confirming what I thought re: basic signal path, maybe seems like I'm too hasty wanting to add a second voice before I even understand what I'm doing with one, especially given what you and yeahivandalizm have said about WD's functionality.
Sequencing in-rack really fascinates me, but yeah, I'm also thinking about a Beatstep since I already use Ableton, hmmm.... as always, Pico and Ladik, thanks for the practical suggestions. Pico Seq would match the out I got for headphones... I will update this thread as I go ofc...
Cheers 33PO! You've really helped.