Lexus LS 2007+ :: Driving With Rings And Effect On Steering Wheel

So when I bought my '11 460L I noticed that along the top portion of the steering wheel (the lacquered portion) there is a fair amount of bumpiness. Basically it seems like the clear coat didn't cure correctly. It's not a big deal and ultimately I can live with it. However, since it does seem like a defect in the way the steering wheel was made I brought it up to the service adviser earlier today when I was dropping the car off for service. His immediate response was that the previous owner drove the car with a ring and that what I was feeling were indentations made by the ring.

While I can understand that a scratch or a chip may result from a ring riding on or banging against the wood, I find it very difficult to believe that it would actually cause waviness in the actual finish. This, of course, is beside the point that what I felt were more of protrusions rather than indentations.

So my question to you is for those who drive your cars with rings and such, have you seen those rings have any effect on the lacquered portions of your steering wheel. I didn't push the issue any further aside from the adviser who is the assistant manager saying that he will run it by the primary service manager. But I am not sure I want to let this one slide unless it really is an issue caused by the driver.