For me, it's synonymous with cheap vocal PA's.
If you like touring with a plague blanket in the back of the van, go for it, because it soaks up oil spills, excrement (don't ask), animal fur, beer, pasties, fizzy drinks, and chocolate.
It also smoulders nicely, when exposed to lit cigarettes, which is arguably just as well, because it's the only way to clean off all of the above mentioned detritus, provided you don't mind the smell of burnt hair - just make sure it isn't still quietly smouldering away when you load it back in the van, with all your other equipment.