Generally HTC has attempted to make it easier to use the device without the stylus, but Windows Mobile wasn't made that way, so you will almost certainly need to use the stylus.
Case in point - how did HTC/MS allow this to happen?
Start contacts, navigate down to the contact you want to call, but somehow, call the Work telephone number, NOT the default mobile number.
Normally you'd D-Pad down to choose the contact, d-pad left and right to choose the contact number (w for work, m for mobile etc), and dpad in to dial it. Try doing that with the blackstone.
Sigh. It's a lovely piece of hardware, but you miss the dpad when you don't have it.
But, at least HTC's modfications are a good start (elphantine start menu, menu for notification icons etc, menu for volume adjustment). I just can't stand them!
I've remapped a long press of the power button to bring up a virtual dpad instead. It makes life so much easier - makes me feel at home on the device, and the extra long screen resolution means it hardly interferes with normal usage when it's on screen.