If you didn't obtain CP before, you would get higher CP limit. Champion's Honor is pretty useful for PVP gears.
How to exchange conquest and honor gears?
You can exchange the conquest and honor gears from Conquest Quartermaster and Honor Quartermaster.They can be found easily in Stormshield(Warspear) and Ashran.
Alliance Ashran Quartermaster Location:
Horde Ashran Quartermaster Location:
Kindly Reminder:Possible account termination when using illegal leveling or illegally obtained gold.