Question about the "hole card cam"

[BogeyWan]

I had been wondering about the hole card cam and it came up again recently in a friends blog Up For Poker (Little plug for CJ there)
OK A lot of these guys who play in these tournaments (WPT specifically) and who frequently come up against one another in tourneys...... Do they study the shows?? I mean wouldn't it be a gold mine for the astute pro to have access to that kind of information? Or is it just another, perhaps, negligible piece of the puzzle. I mean these guys play against each other a lot and probably know each other's m-o pretty well already.
Has anyone seen any articles or anything concerning this? Or if you are a pro this affects directly, please feel free to respond. I just thought it would be interesting to get the perspective of some of these guys (or gals) who have played in these and how it affects their play if at all.