Hactually Mrs GG, I re-read my bit and really meant that the extreme tops were not worth using, and like you, I use the unblanched three or four inches above the soil, as the colour helps a lot of white sauce dishes and soups well, but you already know that...
So Anton, read my post to mean that the bendy stuff right at the top, which is open to the elements, won't get used, and can be clobbered, but as Mrs GG says, the insides of the bit between the wings and the ground above ground is just fine!
Phew, I'm glad we sorted that one out!