Love the information shared from people who actually have used the products! The DT-Swiss RWS Skewer system sounds great and I did some quick research on them and am impressed enough that they are going on my Christmas list I think. I see they also offer a steel version now, according to one website.
Personally I don't care if they weigh a little more if they are more durable potentially. I guess it is like anything else in that if you use them properly and don't abuse them, the aluminum ones are just fine. Doesn't hurt to go for the more robust ones if you are concerned though.
I also checked out the ones from Paul Components and like everything Paul, they look amazing. But the price? You really have to want that brand I guess. The less expensive DT-Swiss alternative looks awesome.