Not sure if this is a bug or not, but whenever I try to launch the TiVo Search Beta, it tells me I can only use Swivel Search or the old search because I am using Parental Controls. But wait--if I quit and immediately relaunch the TiVo Search Beta it goes right in! My Parental Controls are still set up, but I can also use all the features (as far as I can tell) of the TiVo Search Beta.
Quirky launch procedure aside, I like what I've seen so far! It's a little sluggish, but I'm sure that'll improve once it goes live. Even so, it kicks the heck out of the old search, IMHO. We use it all the time, despite having to "double-launch" it each time.