Great post. Because you must be handy to build your own splitter before
We have a horizontal splitter we built also with log lift and 4 way wedge, 25hp Kohler electric start, 22 gpm pump and 6" cylinder with 30 inch stroke.
We also have a home made skid steer splitter with same cylinder. It sticks out like most skid steer splitters do, like Pinocio's nose. We have wedge on cylinder ram with a log extractor to peel of a chunk if it gets stuck. some have wedge on end of beam which is nice but you better have enough power to split any chunk because if it gets stuck its hard to get off.
We also have a splitter for our mini skid that you stand on. Ours is made by Ditch Witch but it's like a Toro Dingo. We just call it the Dingo. It mounts parallel with the attachment plate, or "sideways" as you are standing on the machine. It works AWESOME! because you can articulate the splitter just like the bucket attachment. So you can turn it upside down and split a chunk from the top and then articulate around and split the same chunk two or three times without even moving the chunk.
We are going to build a bigger one for the Skid Loader like the Dingo's. The only negative I forsee is that because the splitter is close to the machine, the chunk you are splitting has to be out in the open enough that your skid loader tires aren't driving up on other chunks as you try to get close enough to split the one you want.
Sorry for the long post but I really like log splitters.