@Sirblart If you go to 32s it will be just like stock but any small tire will be like adding gears in a truck. It may slow it down a few MPH on top end but it will pull harder with less effort. Its like going from 1st gear on a bicycle to 5th its easier for you just like its easier for the SxS.
P1000 - Little Tire to Gear Math
Pros
More seat of the pants power
Easier to move the tires
Less work on bike (1st to 5th concept)
Cons
It cost money
little more noise
Could void warranty
Maybe a few less MPH
My opinion
If you are the guy thats going to do any type of hard core riding be it mud, snow, rocks its a great upgrade.
Bigger tires its a great upgrade.
If you like racing your buddies its a great upgrade
If you tow with your SxS its a great upgrade
If you just ride around your yard or light trail riding and have never had your tire to where they didn't want to spin or one of the above its a waist of your money. But still a really cool upgrade.