@Warren, touching post there. Kathleen did not know me prior to my MC accident, but I have faith she'll be there when I need her with my ailments, and vice versa.
Tonight I received my GG Murmur pack. The Murmur wasn't really on my radar as a SUL pack as the little devil in my head has been saying "Cuben! Zpacks! Cuben! Zpacks!" for the past few months. When I looked at the price difference, I was ok with taking on a tiny bit more weight as either pack is vastly lighter than my bigger GG Mariposa.
Anyway, the other reason I took a chance on it, was because it might serve as an overnight pack for Kathleen. If I can lower her weight, and increase her pack's volume while keeping her comfy, why not?
She currently uses an EMS Fen Women's day pack:
http://www.ems.com/product/index.jsp?productId=3790621
It weighed in at 26.45oz (more than my Mariposa! :o)
The GG Murmur weighed in at 7.62oz w/ no foam pads, but I left the hip belt on. Dead on quoted weight. (My original GG mariposa with no foam, no CF stays, but hip belt weighs 16.5oz)
Well…the weights were awesome as expected, but the fit was a little off as expected. This is a pack that does not state it is sized for a women specifically and has less adjustment that other packs to minimize weight. Here are pics of the pack on Kathleen w/ just my 15 degree Marmot Helium bag stuffed in for some shape.
The pack looks to move off her back near the top, but that's prob because there is no sleeping pad in the pocket to give the pack some shape. It's basically a cylinder in these pics. The pack fits her volume wise:

Now here is problem #1, Kathleen has bigger pecs than me and the non-adjustable sternum strap runs uncomfortably under them. This can be corrected if we dedicate this pack to her, I can rip out the strap and reattach higher:

Problem #2 (which I worried about) are the wide straps of the GG Murmur. I have wider shoulders, so no big deal, but Kathleen does not. The inner seams of the straps tickle her neck a bit. This can also be corrected by ripping the seams and trimming the straps a bit.
Problem #3 is the volume of the pack. She will have a synthetic bag that does not compress as much as I'm used to with down. Granted when she hikes I'll be with her carrying a bigger portion of the load, but size will be a question. Gotta get some more of her gear together to see.
I think I'll keep it one way or another. I respect Zpacks, don't have personal experience with the Blast durability, but Joe says it has a finite lifetime with the CF. I am used to the silnylon Mariposa and how durable it's been for me, so we'll see how the Murmur does. The Murmur just looks like its little brother and the price is great. Just have to see if we can make it work for Kathleen.