Keep it real. Rory... no offense bud, but have you ever had a bad day of fishing because trout can see you 5x tippet? It's the same idea. Also, when you show off your box with that stuff in it, it's like walking around in a speedo with a huge package.
don't get me wrong, i know the more realistic the better, and my fly box has its fair share of interesting looking realistic flies, but those just look like they take soooo long to tie, don't know if its worth it.
I used to take a lot of time tying Eporeus and Hept nymphs like this. I fished em too with no more success than I have had with simpler nymphs such as PT's and GRHE's. Fun to tie but not more fishable, even on hard fished waters.