I ran this combo on quite a few occasions this fall with super cards in front. I did so to warm up the sound that usually is evident in super/hyper card recordings where the bass gets rolled off. IMO, it was a perfect match. With the straight v3, I hear more details of the reverberant sounds in the room. When I add the m148 to the mix, the tapes I pull had a smoother, more analog sound. Some of the detail was left out was not as present. This is generally a good thing if you are recording in a not so good sounding room.
I think JasonB and Callery are caught up in an issue of semantics. The 148 adds the equivalent of "dither" in the analog stage by warming over some of the details that the mics pick up (yes, I know dither refers to the a/d stage, but in this case, it makes for a good analogy). The v3 accurately represents the information it receives and lays the tracks on tape.
Money not an object, I would run the mk41>m148>v3 combo indoors every night and perhaps even in a shed, but outdoors or onstage, I would run straight mk21>v3.
Frank, if you want some m148>v3 tapes/discs, lmk. I can send both section and fob sources.