I've used it. I wasn't super impressed with the features around grouping accounts so that you can match a group with a feature toggle. As I recall, it was mos

I've used it. I wasn't super impressed with the features around grouping accounts so that you can match a group with a feature toggle. As I recall, it was mostly regexes, rather then a long running group system. I'm guessing a big infusion of money will help with this.