Those little Maggies may sound great, like many small cone-based monitors, but the spatial character of planar speakers will be lost. This may not be evident in the environment of a small demo room.
The room the demo'd in at The Show was quite large and had pretty tall ceilings (I would estimate the room at around 20X30 with 10 foot ceilings, unless my memory is off). The soundstage they threw was very convincing there. The seating spread of the audience was quite wide and deep and I walked around that space a bit during the demo. The soundstaging was very good wherever I stood in the listening area. I'm guessing you know, but of course they are not cone-based monitors, they are small panels, supplemented by individual woofers in a conventional cabinet. No, they don't move as much air as their larger speakers do (I've listened to 20.1's and 3'6's at length), how could they? In their own right, they are very impressive in their presentation of music, regardless. I do not think they'll be competitors for those seeking the impact and refinement of the larger panels, but there will definitely be a market for them. They certainly would have a very high WAF, though the woofer cabinets make for small coffee tables.