It's funny talking about traditions. I've actually used that greenheart (talk about slow, WOW) with a traditional reel on it. What a beast to cast all day (I only did it for a couple hours). I personally feel that if you could put those same guys who started these traditions into todays world and changed their status, they wouldn't go the same routes they did then. Let me explain.
Most of those guys using double handed salmon rods (aka speyrods) were of priveldge and had ghillies who tied ALL their flies for them (well, I do know some of them tied flies, but bet not all of them all the time). Now, make them tie all their own flies (much easier to lose flies tied by someone else then ones you tie yourself) and give them some of these newer generation flyrods, reels, and lines and I bet you'd have a TON of converts on your hands (the weight of my 16' 3 piece greenheart weighs MORE then similar rod/reel/and line of my current spey rod, let alone adding the heavy reels and line they were using). So tradition IMHO is what you make of it. I say go for it.
Now, if you really need it to be kosher, I bet you could find a Rabbi to bless it for you.
I don't get why people get so worked up over nymphing for steelhead. A glo-bug is a heck of alot closer to immitating a natural food form than a popsickle marabou - or most spey flies for that matter. Even cavemen realized that evolution is a good thing. Tradition is fine, but unless you're also fishing with antique lines, reels and rods, it is pretty lame to use "tradition" as an excuse to trash on people who don't fish the same way you do. Methods differ, but the MAIN purpose of fishing (flyfishing included) is to CATCH fish, right?
Caveat: this is not directed at any one person, it is just my rant for the day.
Are you in Maine? If you're flyfishing for steelhead, my understanding is that you must fish nymphs and glo bugs to have any kind of a chance to hook a steelhead. And why would it matter what we think in the northwest, where the waters we fish are totally different than yours?
SPEY CASTING WITH GLO BUG????? ARE YOU OUT OF YOUR MIND????? that is a great idea! Hey why not!!! I would thow and old sock out there (that i tied of course) if it catches fish! Heck this one time i had a dream i was a steelhead and I ate a glo-bug from a spey rod......wow intense. Anyways i could physco-analyze your org. post but the flat up and down of it is......If it Rocks your horse then keep on doing it....but if it doesn't work then you should probably try something new because it didn't work.
If you are swinging it I don’t see how it is any different then swinging a polar shrimp, oh wait a min it has a wing. During a long drive this past weekend with my brother-in-law the topic of tinheads came up. He talked about how most of the anglers were fishing glow-bugs with an indicator in the heads of the riffles, every one in a line. He was told he had to do the same to catch. His response was how did they get to the head of the run as he went to the tail out and started to swing his fly all by himself. It wasn’t long before he was hooked up with a bright fish. The guys he was fishing with could not believe it. I think you will find more anglers swing flies with two handers out there these days. Now if you plan to nymph with a two hander it would be better to stick with the rod you have
The so called spey tradilionists will have a problem with it but if its legal in the waters you fish why not and sometimes fishing an egg may be your best chance at a hookup. Myself I usually start swinging a spey or streamer, then perhaps if there is no action later in the day go to nymphs and/or an egg pattern.