My 17 years experience with Qataries is that they are quite decent. I have yet to hear a loud voice from our sponsor & he would always give you way in lift etc. He was Qatar's ambassador to India and likes Indian very much.
I was also quite friendly to my earlier Qatari neighbour who was a policeman. Such a soft spoken person that you will not believe that he is in CID. I used to see his brigadier boss in swimming pool in Doha Club & he was absolutely down to earth.