Hi Victor, it's great to hear that you like the look of Slices. It was certainly intended that it'd be very useful for the kind of project that you're working on, so it's great to hear that it's proving to be the case.
Slices is still in its infancy so there isn't a huge amount of information available at the moment. We do have some plans to produce a Slices screencast in the next couple of weeks so keep an eye out for that. In the meantime, there's another post about Slices on our blog that you may be interested in. You can also take a look at the code which is available in our Git repository (git://git.springsource.org/slices/slices.git) and FishEye.