Typically for what you are wanting to do (or what they're suggesting is possible) you need a switch that's managed or at least, very expensive. In order for you to take advantage of binding, you'd probably need a greater workload than you can provide in a home.
I'd compare this to me playing with clustering in Linux. Yea, it's all kewl and everything, but I can't begin to simulate a workload that would demonstrate its benefits. If you want to play with binding, be prepare to spend at least a little more money (or get stuff at work) and remember you need 2 disk subsystems capable of transferring enough data to even see if what you have works. My setup here at home won't come close to maxing out my GigE, so until I would go to two systems with Raid, I am limited anyhow. As I only move large files very rarely, there's just no reason for me to play with it.