I have requested an oil sampling kit from Blackstone. Just waiting for the kit to arrive. However, I've read that an oil analysis might not tell you the full story.
I always let the car warm up before doing any spirited driving. But even then, my car doesn't see RPM > 6k. But that's only under my ownership. I bought the car at 60k Kms so I cant be sure how the previous owner treated it.
Either way, considering what a new engine costs and the fact that I am out of warranty, replacing the bearings may be a small price to pay for some piece of mind.