I'm surprised to see nobody's kept up the thread this year...
I've done three spruce beer batches so far - all extract brews, always with the new tips in the spring, and always adding the spruce at the beginning of the boil. They've always turned out great! Not very sprucey, but very herbal...
Some really nice systems here... My wife and I just transitioned from extract to all grain, and here's the setup so far:
We preheat water on propane for speed. HLT is electric with ETC automation - the hand mixer rednecked on top just blew up today, but I just received a recirc pump the other...