I have appeared for walk-in interview at client's site and the interviewer's approach was very humble. He took my interview for around 30 mins. and one day later, I received call from the HR stating that I have been selected and within next two days they issued the offer letter.

Face to Face interview conducted by Regional manager. HR round was conducted at the time of joining. All formalities have done next day of HR interview. Joining was with 2 days.