This was fairly easy to install, but it sits pretty far back and there is no overhang- the seat edge is flush with the toilet on the front. This bugs me. It may be possible to adjust but it wasn’t readily apparent. 
The other issue is that the seat doesn’t really stay up on its own. The tank on my toilet is rounded on the front, and because the lid is so big, the best we can get is kind of balancing it there. Sometimes the lid will close on you while you are sitting there, which is unpleasant. 
Functionally, it works and looks better than the kind that sits under the seat- I prefer the integrated seat.