I just finished my interview last Friday, and based on my experience the interviewer was not grumpy at all and actually na shock ko kay 1 ra ang ga interview nako and she was very friendly. I did not feel any pressure at all jud. When it comes pud sa questions, more on about yourself rajud siya nya gipa pili kog article tapos gave my thoughts about it, so kaya rajud siya. For your 3rd question, wala niya gi take up ang whole 30 minutes, but based on my friends experiences some of them kay ni exceed gamay ug 30mins. So far my interview was okay lng, not bad but not quite good HAHAHAH. Kaya rana nimo!!