So far, I love it. I love that I can customize how the result will look right down to the most finite of details - something that was impossible before with the various google add on search engine and too time consuming have it to do it all by hand with other search apps.
A couple of quick thoughts... it took me a minute to figure out the way to add search results was to first enter the binding tabs and then later add a repeat BOSS region. But, my thought for some of the users (just by seeing posts having trouble with some of the most simple tasks), is that you consider creating, say, a pre-made result structure with the basic stuff (i.e. Title, Abstract, URL). Another thing to consider would be tying in particular result combinations with the preset manager.
I'll have some more thoughts soon after I twist and pull on this thing a bit more.