Yes I have, held but not shot and NO I wouldn't do it again.
The reason I say that is last week I pulled a possible new bow candidate back and the draw curve was so terrible I put it back on the shelf real quick. The "pro" on hand said it was set at 70#, but it felt like 70# from the first tug of the string all the way until it broke over.
Now I know I must draw one back to feel how good or bad it draws before buying.