Yes. Not very impressed. It was difficult to get a good, even coverage and depth of colour. Also, after a while, the paint started to come off (although this was in a bathroom). They can easily be chipped as well.
I agree. You have to do loads of really good preparation first, you have to use the right undercoating stuff or it doesn't work at all, it's pretty expensive and it always just looks like painted tiles. Just rip 'em all off and re-tile - it's much easier!