Its a fully hydraulic clutch setup with a concentric slave cylinder, so I imagine it won't be any heavier than the stock 4th gen clutch, which uses the same setup. Take a C6 Vette out for a ride, that will probably give you a pretty accurate feel for what the Camaro's clutch will be like.
If there's one thing I can't stand though its featherweight clutches (Hondas, ect). They just don't have any feel, I want to at least know I'm pushing the pedal in without it just dropping to the floor from the weight of my foot.
If you want to feel a stiff clutch try driving a 03-04 Mustang Cobra, its a heavy duty cable clutch, requires somewhere around 40lbs of effort to release. The tradeoff is no hydraulics to go bad, cheaper to manufacture and service, and the clutch feel (engagement point) is dead on. You can get in one of those cars and drive it like a pro even if you've never driven a Ford in your life because the feel is so accurate and its so easy to modulate. Thats the biggest advantage of a manual/cable style clutch, I wish they still used them.