Is the Origins base the only base with an east to west split?

From the photos on your website, it looks like the only base which comes in the “head-to-toe” orientation is the Origins base. By head-to-toe, I mean that you cannot see the metal links on the end of the bed like a side-by-side base. Can the Artisan base come in a head-to-toe orientation?I would like a “head-to-toe” base but I am unsure of the colours and fabrics of the Origins base since they appear quite limited. I also wanted a better quality base since I am thinking of purchasing the Artisan Naturals mattress.Thanks,Lisa