It's addictive.interesting. I'm always looking for subtle but interesting effects for those kind of sections. I'm going to try it.
For a similar swell, but much lower note effect, try Synth Strings. Set speed at .1 or .2, Freq at 0. It swells in textured low notes. A little goes a long way. Sounds very Synth when playing it solo, but blended in a track is pretty cool, bass-pedal'ish. I'm using it one the outro of one song.