Well, my S1.4s showed up this afternoon and I haven't stopped listening. They are ex-demos from Dynaudio US so they have been run in at least somewhat.
Initial impressions are that they are a different league entirely than my 52SEs. Bigger sound, more open and forward, much better detail & soundstage image. After an hour I put my 52SEs back downstairs in the HT system. Now I have to work on getting them burned in fully and acquiring that NAP200 to really deliver on their potential.
I have an Arcam Alpha 10P sitting around (until I get around to posting it for sale). I may try using that to see what kind of sound I get, although I'm afraid it will be a step down down from the Naim UnitiQute in SQ, even though it has a lot more power.