Hi Lewis,
I think the 534-SS performs better in near-field situations than a direct radiating speaker. When you try it out, start off by placing the 534-SS directly to the side of your listening position in dipole mode.
What I noticed with when experimenting with mine, the dipole setting can cause the sound to be several db quieter. Be sure to compensate for it at the receiver.
Since you are accustomed to the 532's on the side, a dipole speaker on the side might sound a little odd at first, but give it a few movies and you'll start to appreciate the the diffuse sound they offer. At least I do... 
-James