Funny this thread is still getting replies. I've caught 4 steelhead on my own spinners (bronze/green, black/yellow, black/yellow, silver/green), and have come a long way from these first few. The long wire is so you can "tune" the spinner. After snagging up or catching a fish the wire tends to get bent, with a longer wire shaft you can easily bend it back to spin true.
I actually tied up a few last night. I've converted to a siawash hook vs. a treble. The matte silver/blue are for winter steelhead, and the black size 3 are for Rogue half-pounders. And yes that is a spey line box...but that's another story.