My apologies, the Notification volume slider is there. I was trying to find it with the keyboard out which condenses everything on the screen, obviously. It was hard to see that it was 'scrollable'.
Man, this phone is awesome. Battery life has been better than any other Android device that I have owned and I have owned most of the T-Mobile ones including the Nexus One and S.
The interface is smooth, the Jump Keys rock and the keyboard is unprecedented.
I hope to root as soon as 2.3 is available.