I haven't tried them but a friend of mine has. Apparently it's like eating a mouthful of rather nasty tasting mush. Perhaps if you have a low cal/point sauce or some chicken etc it might make them worth trying?
Just looked at the H&B site, they're £2.49 but you can get another for a penny at the minute, so 2 for £2.50 if you want to give them a try.