First, I have no experience with it, but I do have a splitter.
The first thing I noticed is how low it sits. Unless you can set it up so it rides at least 30 inches above the ground, or unless you are very short, you'll be bending over too much or working on your knees.
Secondly, 14 tons is kind of a wimpy splitter. In the Northern catalog, they show one 12 ton self powered unit, from there they jump to 20 tons from just a 5 hp Briggs engine and go as high as 42 tons.
I generally don't trust anything expensive from HF, but a splitter is pretty simple and virtually any part can be replaced.
The splitters that have their own carriage and run on their own engines usually will operate vertically as well as horizontally. I have often set mine up vertically to I can roll large logs into position. I can tow it anywhere the tractor can go and leave it there while I use the tractor for other things. I suppose if you are splitting anything that can be split on a 14 ton splitter, the piece will be small enough you can lift it.