I found a link on a facebook friend’s post (thanks James :)) to a handy little app called the Lumiya 2 Viewer. I’ve used other Android apps for SL before, but this is the first one I’ve seen that can sign onto other grids. I used it to sign on Second Life, InWorldz and Kitely. You can also use Lumiya with OsGrid, New World Grid and FrancoGrid. There is an option to add other grids with their name and the Login URL.