Glad the Querty TS made it there safe and sound. I'm loving your old Dvorak. I'm thrilled since I'd promised myself a TS when I finished my latest novel and after dutifully waiting until it was done--FW was gone. Ebay and a bulliten board trade, and I finally have the keyboard of my dreams. :>
When I first started on the touchstream (and now, sometimes when I'm tired), I typed as hard as on my old keyboard, which, since the TS has no give, caused pain. I'm now practicing a feather light touch and that has helped measurably.
When I'm typing, I tend to float my arms from the shoulder, using the touchpads only as a kenesthetic reference, not a support. I'm also pretty strict about proper ergonomics and posture. I also rest my hands on the keyboard when not typing (all five fingers down)
I'm going to go against the tide and say that I think switching to Dvorak and the TS at the same time works well. At least for me. My brain seems to have preserved the Qwerty patterns for buttoned keyboards and created a new neural file for flat keyboards.
For a while I had two keyboards attached to my computer, the TS to learn on and a regular one for when I had to type fast. Since I went cold turkey on the TS, I'm making faster progress with my Dvorak.
The other thing I would reccemend for anyone, whether switching to a TS, Dvorak, or both is a good typing program. I use Ten Thumbs http://www.tenthumbstypingtutor.com/
It's cheap, has native Dvorak and Qwerty tutorials, and the Viking graphics make me smile. (a nifty nuro-science trick, practice right before bed, you'll wake up better at it, due to the brain's reorganizing info as you sleep.)
I never formally learned Qwerty, so tended to look at the board even for my fastest typing, which given the large overhead of visual processing in the brain, slowed things down. I'm hopeful that the discipline of formally learning touch typing, combined with the efficiency of Dvorak, will eventually make me faster than I was before--and with whifty gestures!