It's my understanding (may be flawed!) that you would need their full system. It does not have enough oomph to move the waste to a gravity line - the pump gives it that flow and does it with a smaller pipe than would normally be used for a toilet because it grinds things up first.
You might be able to use a wall-hung toilet directly into that depending on the distance. Keep in mind that the pipe must have slope down, so the outlet would have to be above where you could make the connection. Also, most wall-hung toilet brackets are designed to allow their outlet go down, not to the side. That may mean the toilet would be too high, but depending on how far away it is, you may be able to add a T lower to accommodate it. Keep in mind also that codes require there to be a sink where you have a toilet and that will need to drain as well as have a vent to work properly.
For the not inconsequential cost of either the Saniflo or a wall-hung bracket, you might find it just as cost effective to tear up the concrete and install a conventional gravity flush toilet. Gravity isn't going to fail, but motors and stuff can and will. It usually isn't all that big a deal to trench the concrete to add a new drain line in for the toilet, especially if you're willing to put in the grunt work. Having a pro do it is certainly quicker, cleaner, and less stressful, though!