I never actually worked for Benefit, but almost! I did a demo interview with them a few months before I was hired at MAC. I think Benefit products are great, but the job was not for me (I was offered the job). The "traffic stopping" thing is hard! I was exhausted by the end of the demo (it was like 2 or 3 hours). The manager said that you have to really get into people's faces...that is hard for me to do 'cause I don't like it when people do that to me. I guess it really does depend on how busy your location is on getting people to sit down. That counter was right beside a MAC counter, so there was a lot of competition right there as well.
Now that I work for MAC, it is interesting to see the different selling techniques and philosophies of different cosmetics companies. Like I said before, Benefit products are great...I hope you have fun and success working for them! Good Luck.