I see more and more pros and amateurs shooting via the rear screen with the camera held away from them, not with long tele's but certainly with big and heavy sub 135mm glass. Lets not forget that for many years it was common to use waist level viewfinders... OLED screens with much higher contrast and brightness output are making rear screens evermore useful for more and more photography, in portrait environments it is very nice being able to maintain eye contact with the subject, or at least not have a big camera and lens between you.