i think the video gives a good view of what the pedal can do. It seems to me like it's something that would have a place and be really useful in a couple of songs live but would be loads of fun to use in the house :)
I recently bought one of these
http://www.youtube.com/watch?v=Otdj4HdRk8Y
And although i do use it with my band with both boost and feedback function, i found i use it loads at home cos it gives me usable feedback at low volumes..... loads of fun !!!!!