Never had one, never saw one thrown. Nobody in my area has one or uses them. I know they are not PBA approved but are they just over priced and this is why nobody uses them here? Does Storm pour the covers? Ive been interested in them but never "pulled the string" to get it. I'm looking at the pro V and Typhoon pearl but these balls are over a year old already and other companies technology has grown over the last year...So why would I get one of these over one of the bigger companies?