I;d prefer to answer these question by email to not clutter up the forums, cuz it’s a paid thing.
(mods, feel free to make your call)
But in short:
- it works in either kind of install
- it also works with multiple TLDs. I use it to run atypicalife.net and my family’s blogs on the same exact WPMU installation that runs wpmututorials.
- it works fine with 3.0, we’ve been using it on trunk, but it meeds renaming.
- remote login means saving the cookies from one domain to the next. your one user login & pass works for all if you’re assigned to those blogs.