Silo 1.4 beta is out, for those who have a previously registered copy and want to check it out before it goes public. This version will seriously streamline workflow, especially with the new highlighting and multi-selection modes. There's still some small kinks to work out, but I've been using it just fine for a couple weeks now, even with glitches, it makes a big difference in how fast you can work.
http://www.silo3d.com/forum/viewtopic.php?t=3259
Follow the instructions there and check out some of the new features.
The nevercenter team is really starting to push forward in streamlining/fine tuning the existing tools while adding new ones.