Sorry about my truncated post. Pressed the wrong key on the keyboard.
Anyway, I did read an interview with an Adcom in which he stated that he did read writing samples. With all these Personal Statement editing services abounding, he said that the WS gave him a point of comparison.
Even though one is certainly tired and spent after the LSAT, if someone writes an impeccable PS, but in their WS, can't string two coherent sentences together, it could lend some credence to the Adcom's view.
That's my two cents worth.