The R2S coverstocks are the best I have ever dealt with. I am actually starting to purchase all the R2S equipment, and weeding out the rest.
The duller pieces will need maintenance, but I know someone who has the T-road pearl, and they are not very good with maintenance. This ball hooked as much in the end of the year, as it did at the beginning.
I clean my equipment, before I put it back in my bag, and I never have an oil problem.
The key with Duller equipment, find the AB pad, or a scotch pad that gives you the desired reaction you are looking for, then after everytime you use it, clean and scrub with that particular pad by hand everytime, then you know what you will be pulling out whenever you need it.
Also, watch your grips, keep up on those as well, a grip will wear out faster than you think, so over time, that will cause a change as well...