True. Lets say, then, that its very highly recommended to upgrade your clutch cable so you don't have to replace it so often, and so its much less likely to snap at some future date in the middle of nowhere on a Sunday afternoon.
Yes, the stock cables can last a long time. A search here will yield many that have broken earlier even without the SR2. And over history, I've had bikes that I rode 30k and sold with the original cables installed. Of course they had soft oem clutch springs.
The other problem is cable stretch, which happens faster with the SR2/Gold installed, even faster with Red or Green springs. A stretched cable makes it much harder to dial-in a good adjustment, one that stays adjusted over a long period of time.
If nothing else, when its time for a new cable, get a Barnett you'll be astounded at the difference in feel, and in length of service.
Don't let any of this sway you from getting an SR2 because its the biggest smile-factor mod you can do - its an amazing acceleration improvement - and doesn't cost too much.
JamesD: It might be a good idea but I don't think 100% necessary. I run the stock cable and have had the Barnett conversion installed for approximately 15k. All of those miles on a single cable. I replace the cable every other year so this spring I will get another.