I really hope you don't ride very much! You'll spend just as much time cleaning! Keeping polished aluminum looking good is an absolute pain in the ass, unless you get it clearcoated. I would just take the guy up on his offer to swap for the chrome ones. After dealing with the polished aluminum wheels that came on my truck, I'll never buy anything that is polished aluminum, ever.
Have you thought of just polishing the lips? I've seen a few done and they turned out very nice. I hope that your bike is black too, because polished wheels or lips only look good on black bikes IMO.