I use a steamer in the studio, but for out & about.... I still think this tip rocks! Gonna have to try it. I imagine it would give a better sense of seperation as well.
Related to this. I've tried moving colourful fabrics (prints, stripes, stuff like that) as backdrops for stuff to get blurry colours, and it sometimes works. Most of the time it didn't come out very well though.
Why wouldn't the strobe freeze the motion on the background, thus exposing the wrinkles? Wouldn't you have to really drag the shutter - 1/30 or slower?