I normally try to shoot the bow 1st, but since I've always bought bows at dealer cost I have bought them without shooting, but that does Not mean I will keep it as my personal bow.
If I was buying retail, No way!
It does show that advertising, endorsements, etc really work. I have guys ask me every year what I am going to shoot and they'll order one. The Best Bow for me may Not be the Best bow for You so IMHO you should always shoot several models.
Dan