I installed v1.10 with 'adb install' to a Nexus S running stock, locked, never-rooted 2.3.3 (which was a manual update from 2.3.2 for me). It didn't automatically run installing this way. I may have just glossed over it but I didn't see it in the app drawer at first. I did see it in Manage Applications though so I rebooted. Found it in the app drawer, ran it, it rebooted, and I have superuser in my app drawer now. I opened a local shell in ConnectBot, typed su, and was prompted to allow/deny. Selecting allow I received a '#' prompt in the shell. So I'd say it worked!
Can finally load Titanium for a full app data backup and flash clockwork/cm7!