Few pieces of data to add to this.
The 1098/848 cam's are the same and they really suck. Not much lift and very short duration on the intake openers. They are clearly designed for lower RPM running and even when you time the living crap out of them, they still only produce power up to roughly 10k RPM. So to mess around with the stock cam's in my view, is pointless.
The 1198/848 evo cam's are MUCH better. They have more lift and more duration. They're still of the shorter duration variety, as these motors aren't designed to be race motors, so they keep the duration short and focus more on bottom end grunt instead of making them a screamer, which also helps reliability.
The 1198R cam is more similar to the older 998R/999R cam's of older motors. It has a much longer duration and about the same lift as the 1198/848 evo cam. The longer duration is what allows you to run higher RPM's and thus help gain more power. However, the cost is higher rocker wear, which can be a costly thing in of itself. The Panigale uses cams that are similar to R cam's stock and has DLC coated rockers to help avoid these issues. Of course the gains you'd get are all at higher RPM's, so you'd need to buy an aftermarket ECU, raise the RPM range and time the motor to deliver power up there.
Yes, the 1198R cam's fit the 1098/848, they just require some grinding because the valve location is slightly different. Its not a wise idea to use them in a 1098 either, because they don't tap the rocker square, so it will literally burn through rockers like water.
Unless you're willing to put in the effort to build the motor properly to utilize those R cam's, its not worth it in my view. For the street, 100% not worth it at all. For a race bike, I'd rather have an 1198 anyway because those cam's aren't bad and that extra 100cc's helps as well!
