83 Marcus Lucas is not terribly slow. He is like a 6'5" version of Ricky Proehl. Lucas is excellent and finding the holes in a zone and slipping behind coverage. When he catches the ball it is at its highest point.
Cam is going to love throwing ropes to Kelvin Benjamin and Marcus Lucas at the sideline and corner of the end zone. This is the type of receiver that fits Cam. Cam does not need speed receivers with his game. He just needs the tall ones that can catch at the sideline.
Here is a link to a video so you can see. http://youtu.be/pXeClvfkO9E?t=1m2s
Welcome to the huddle Marcus!