Haha, very little experience with that. But I do know rollerblade bearings are now most popular bearings thanks to low prices because of their initial popularity. Kind of how 18650 cell became popular because of laptops and is now virtually everywhere, including EVs. It’s all playing at large scale with manufacturers.

Not sure what’s the part you are interested in. I did learn about them in school, so perhaps I do have some knowledge you might find interesting.