The hard part is the dedicated graphics... Panasonic makes the Toughbook line, but not w/ dedicated.
This was all I could find, tried Asus, HP, Gateway, Pany, and Dell.
HP TouchSmart tm2t with the Intel(R) Core(TM) i5-470UM (1.33GHz, 3MB L3Cache) +512MB ATI Mobility Radeon(TM) HD 5450 [HDMI, VGA]
You say you don't want an HP... but seriously you're asking for a lot in a small package. There's not
a great deal to choose from. The market is transitioning from "tablet laptops" to actual "slate tablets."
Anyway, it should come close to what you want, not sure about the pressure sensitive screen, it has multitouch at least.
You may be better off buying a decent laptop, then getting a separate wacom tablet if you really "want it all" - tablets are not a big market and will never see the same treatment as mainstream size/gaming laptops.