The "compression clamp" is an SCS or Standard Compression System, it acts as a clamp to hold your bars in place and as a compression system to keep your headset tight. Regular double, triple, and quad (2,3 and 4 bolts) clamps are just clamps and won't compress your headset and keep it tight. The purpose of the double, triple and quad clamps is to be used with another compression, either ICS, HIC, IHC or your standard threaded compression. I won't explain to you how they all work as that info is already in the compression section of the forum but SCS is generally regarded as the best system of compression because it works with virtually all forks on the market, it seems to stay tighter than most other compression systems and you don't need to run a slit in your bars, meaning you have less chance of snapping them. You can't just take your SCS clamp off and use a regular clamp otherwise you would have no compression keeping your headset tight, even if you install a new compression you would still need to cut a slit in your bars and they would be shorter than what they are in SCS (SCS raises your bar height by 1.5 - 2 inch depending on which SCS you're using), also if you switch to a different system and cut a slit in your bars, you can't just switch back as you please as you would need to block the slit with a pipe or cut the slit off. I'm pretty sure you are already using SCS, DON'T switch to another compression and if you want to change your clamp, make sure you buy an SCS clamp, not a regular clamp or it won't work.