OK, FINE. I use it! But did you have to show everybody?
Since jamming the machine, I've become a lot more wary about hemming on such small allowances, especially as having the needle gobble up a nearly finished item is such a heart sink moment. This stuff is near-magical in its sticking abilities. The fabric doesn't end up stiff at all, it dries entirely invisible and the finish is really neat. I use an old paintbrush to apply it and I think the bottle (which cost £2.50 at Hobbycraft) will last for ages. Huzzah!