Just spoke with Chris at Sound Pro to ask whether they'd tested any mics in the 1/8" input.
He said they haven't done much testing because there is so much demand for the few units they have that they haven't had time. But he did say that a line in signal into the 1/8" doesn't work because the levels are too high. He suggested either going into the 1/4" or running an attenuator.
This wasn't consistent with what I've read in the docs. The docs say that of the L, M, H gain settings, only the High gain setting is *not* avail on the 1/8". The docs suggest that the Low gain setting is avail on the 1/8".
So this is helpful but confusing. I'll have my MT today and will hopefully have enough charge time to record tonight and answer this question one way or another. But now I've gotta run out and get some TRSes to be ready in case I have to go that route..