Well that's certainly a two-part question.
Do I think you are wasting money on a steel guide rod to replace plastic in your CZ?
Yes, from a functionality standpoint. The plastic (I think it's Delrin) rods work perfectly and last a very long time.
No, from an aesthetics and pride of ownership view. You've got a commemorative edition of a very classy all-steel pistol. The stainless guide rod will work beautifully and will add to the feeling of quality while inspecting the gun.
As far as Steve Bedair goes, the man is an excellent member of the goods/services in return for money crowd. I needed a replacement guiderod for my Kadet because I'm an idiot and a light plastic rod can go some distance with even a weak rimfire recoil spring.
I mentioned that I was using it on a PCR frame when I was ordering, and he included a 'blemished' centerfire compact guiderod he had. The muzzle end of the rod wasn't completely even, it appeared he accidentally ground it on an angle. It worked perfectly and looked great, I originally thought he made a mistake and sent me the wrong rod.
So the man has great prices, I think $25 for a handmade stainless rod is pretty damn good. He's got outstanding customer service, and I would advise any friend of mine looking to add a stainless rod or pick up a spare to buy from him. And his rods function perfectly. So does stock CZ, but his are way prettier and I don't mind an extra couple of ounces on the muzzle end of a metal-framed pistol.