You might read the second entry (April 27, 2014) on this blog:
https://takingsenseaway.wordpress.com/page/2/
The author is a female former TSO who opts out of the NoS and wanted to travel unharassed while 'packing'. You may find her post helpful. Keep in mind that your experience may differ from one airport to another or even from one checkpoint to another in the same airport. Do NOT expect consistency and you won't be disappointed.