Android Blackbook  is now confirmed to work on older HTC models. This is promising, and later today I will do some tests on Motorola models. There is still many things to do, and many hurdles that simply cannot be overcome. Notifications for missed incoming calls cannot be avoided because the notification is broadcasted from a core application. MMS filtering may also prove difficult, but eventually surmountable. As of now there are many features that have been added in the last two days that dwarf the functionality of coexisting applications.

Landscape mode for text message client

Call log

Contact import

Silence mode option

Notification vibrations

Settings menu completely revamped

I will post a report when I test on the Moto Droid.