I have the Givis and have dropped a couple of times standing still or low speed turning in sand with virtually no damage except a minor scuff (magic marker makes it disappear)
I can still remove panels without removing bars.
I went with the cheaper Givis because I feel that none of them are going to survive a major crash anyway, so as long as they handle the simple drops then it's money well spent.
and if they do get damaged saving the bike then so be it.. less cost to replace.