I was testing it before it went to Pixologic. I remember it was very handy for quick scetches. Especially organics. I'm sure it gives lot of fun for those who starts with sculpting too because of it's simplicity.
Well sculptris was originally developed by one person: http://www.drpetter.se/project_sculpt.html Who was subsequently hired by pixologic to work on I can imagine dynamesh (speculation - I don't really know). And they bought up sculptris in the process.
The interface in sculptris is so much easier to use than zbrush though. I hope pixologic really learn something from it. But here's a pic of something I made a while ago in it. (from the WAYWO thread) bust of pallas/athena by sprunghunt, on Flickr