I have been on the fence about doing the intercooler pipes in the same wrinkle black. I came down off the fence and had them done. The GT-R has a mess of pipes and couplers, and twin blow off valve mounts and mess like that; a lot of it long rubber hoses. It looks like crap and it's not good enough. I picked up the Greddy hard pipe kit which replaces a majority of the pipe and hose run with smooth highly polished cast pipes with silicone couplers. They look great right out of the box.
All things being equal I would love to have everything all shiny and polished, but I live close to the ocean and everything rusts even aluminum; white rust. After everything is installed, even if I was the kind of guy to religiously polish stuff, I wouldn't be able to get at most of the shiny stuff. That, combined with the fact that I am NOT the kind of guy to clean stuff regularly even if I could easily reach it led me to powdercoat a lot of stuff. Any place where I can eliminate a maintenance task is advantageous. Gotta coat those pipes too!
To ease hose installation, like the surge tank, I had the coater leave the ends uncoated.
I gave a little nod to the bling and had him leave the cast in Greddy script uncoated too; the contrast really pops.