@Gary,
I really like the way you found dual uses for each of the components of your "pillow".
I use a Kookalight Pillow. It is supportive, extremely pack-able and light in weight at 1.3 ounces.

I keep it in a MYOG pillow case while packed…

and in use.

The "face side" of my pillowcase is a piece of nylon or polyester, I don't remember which, that was re-purposed from an old hiking T shirt. The other side is two pieces of overlapping grey 1.3 oz silnylon.
;-)” height=”733″ src=”https://dpcr19kltm61a.cloudfront.net/backpackinglight/user_uploads/1354449124_72264.jpg” width=”550″ />
After the picture above was taken I added a few stripes of Permatex Flowable windshield sealer to control the slipping and sliding of the silnylon on my tent floor. Everything together weighs 2 ounces.
On a recent trip I tried using my clothes bag with my "unused" clothing stuffed inside as a pillow. I found it very supportive but extremely firm.
I carry a frame-less pack with my ProLite Plus pad folded for a virtual frame. I do not have a SitLite pad or the like in my pack. My pillowcase could be dual use as a stuff sack but it is "form fitted" and would be quite fiddly to take off and put back on.
Raquel made a good point.
" But, if you are wearing to bed all of the clothes you are carrying, then you have nothing to stuff your pillow with."
You answered.
"The few times when I needed to wear all my clothes while sleeping, I just put small pine cones in a ZipLock freezer bag and stuffed that inside the SitLite pad."
That's a great idea. What do you do if you are above the tree line? L O L
I wonder if either of us included the weight of the rubber bands that both of use to pack and stow our "pillows". ;-)
Party On,
Newton