If you get it replaced under warranty, they will treat it as a "goodwill" exchange; you wont have to pay for it, but the new part will not be warrantied and they will not do the same replacement a second time on their dime. I had mine replaced with an OEM clutch because I am still a year or two away from affording my supercharger upgrade, and by the time my replacement clutch starts to fail - if it does - I will need to upgrade to account for the increase in power anyways (most owners are experiencing this failure starting shortly after 30k miles; I have only seen one or two other people besides you who had this problem <10k miles, and one of them had tracked his car around 5k miles and seriously abused his clutch in the process).
If you plan on keeping your car a long time and see no other clutch upgrades in your future, installing an aftermarket clutch that wont end up failing is definitely the way to go. Our stock clutch/flywheel is also incredibly heavy (32 lbs); going for something lighter would be ideal.
