After asking questions and checking photos here on the Forums, I finally decided I'd sneeeeeak into TB bags with a Ristretto for iPad in Plum/Wasabi, to be used as my netbook and beneath-the-seat plane trip bag. I was tired of digging in the bottom of dark bags, so the light interior caught my eye immediately. I ordered the Absolute Shoulder Strap to pamper bad nerves in my arms. The Ristretto line also has the standard warrior buckle-clasp that most TB bags feature, so it provided a way to test the hand-strength required.
I couldn't be happier with my bag. The Ristretto carried far more than I needed - netbook, cables, steno sized notebook, inflatable lumbar pillow, magazine, Kindle, pens, money/card case, phone, small camera, and snack. The buckle is stiff enough to be perfectly secure, but didn't require both hands (not even for my limited grip strength). The Plum color is gorgeous and rich, and the wasabi interior inspired.
The Absolute Shoulder Strap deserves praise all by itself. I couldn't believe how much difference there was in having a strap distribute the weight of the bag over the whole width and complete curve of the contact on my shoulder. It was amazingly comfortable.
Thanks to you all here, and your photos! I'm planning my next purchase as I type.