You could be right on Rocketship surface. I haven't touched the cover in mine, so I don't know how far it could be effectively taken down. A straight 2000 shouldn't be too much, but still, that's a lot more than what it comes OOB.
I'm a big fan of the IQs. I have the other three and still use them. But I couldn't pull the trigger on the Nano. With the Marvel S cover but a weaker core, the Nano never impressed me. I didn't see it as a real oiler, and the smooth reaction with iffy backend limited it's usefulness, at least from what I could see.
As with all things bowling, it all depends on the conditions you encounter.