There have been claims that Pianoteq sounds as if coming from another room (Mac3 is of this observation, if my memory serves). To me this has never been understandable, because Pianoteq without reverb sounds so close as if it were generated in my ears.
Today, however, I experienced Pianoteq completely like coming from another room. The difference from before was that I had the own sound from my Roland FP-30 turned on, just very quietly, while the Pianoteq sound came in at ordinary level from my large HiFi-speakers.
The effect was very convincing. Part of this is probably a larger latency from Pianoteq than from the FP-30.
Very interesting effect!