Different SkyCoasters

I was wondering, whats the difference between a sky coaster, say at SFSTL, and one like SFKK is putting up. The One at SFSTL is more arch like, while SFKK's is two white poles. Are they made by different people? I have always wondered and I am now just getting around to asking.

I know Sky Fun 1 Manufactures both types.

-------------
We Turn Dreams Into Reality - RidgeStone Amusement

The only Skycoaster I have ridden is the rip cord at CP, it has an arch like structure but I have seen others with two tall poles, im not sure what effect these differences have on the ride sensation.

I've done one at Kings Dominion and Kennywood, each have a different structure. It's been awhile since I've done these rides, but doesn't the Arch structure have the capability to do two (2) rides simultaneously?

The white poles at SFWOA have two sides.