If you hold an FS100 at waist height during an interview of a person, you will simply get that horrible 'up-the-nose' shot that is unprofessional.
And still people make those unprofessional shots with all cameras starting from the venerable DVX100. I've seen thousands of shots where they are taken from waist height and it looks horrible. But it doesn't have anything to do with the FS-100 as those shots have been taken from all kinds off cameras.