Looks like this thread's about to click over into another one. Kirk, your potential Mega Thread is now an actual Mega Thread. Nice going, pal! Couldn't happen to a nicer DI.
So for a DI that's touted as being a straight up DI that isn't intended to be a preamp, it functions as a preamp pretty darn well for me when I plug it in right

Had plenty of juice to drive my Micro VR from the effects return. Worked really well as a front end into the Micro VR, too. At first I thought it would act negatively on the REDDI to go through the Micro VR's preamp, but it really doesn't seem to in any permutation I've tried. Instead, it seems like the REDDI brings everything else up to its level of quality.
So I'm thinking that maybe the transformer output not going through the 1/4" out isn't such a hindrance to getting the REDDI sound through both your PA and amp after all. I can only pray that Peter forgive me for putting a Micro VR in the path of the REDDI, but I've never been much of a purist. If it works, I'll do it. And it's working so far.