[Thremp]

Sorry I used the first image google popped. Lets see if your point holds:

http://www.wowbodybuilding.com/image/bicep-injury.jpg

http://www.powershack.net/Articles/B...ep-workout.gif
Looks like that dudes forearm is in the way, obv too much space. Even enough for a tree trunk forearm.

http://www.t-nation.com/forum_images/6a1a5-beckles.jpg

http://www.t-nation.com/forum_images/6e40c-mostmus.jpg

http://www.t-nation.com/forum_images/b09b3-Priest.jpg