The barbarian gains a climb speed equal to 1/2 her base land speed, taking into account her fast movement class feature. She can’t use this climb speed to climb any surface with a DC higher than 20. She also gains a +8 enhancement bonus on Climb checks.
A creature with a climb speed has a +8 racial bonus on all Climb checks.
So is the enhancement bonus meant to replace the standard racial bonus for a climb speed, or is this actually giving a total +16 bonus? Ditto on Raging Swimmer.
If it was meant to replace they sure didn't make it clear. I think it works to give you a +16 to climb checks, though considering how weak a skill climb is after about level 3 it doesn't particularly matter. Same thing for swimming.
+16 total. Enjoy.