@rundocuri- I think you are smart to be concerned. My mother had these doors installed in her home, and the project took much longer than expected. The installers were building contractors, too.
I think that the main issue that many people run into when installing pocket door kits is that the walls where they are installing them may not work with these doors. That is the problem that my mother ran into because she didn't know that there were water pipes in her walls. The builders assumed that she was already aware of any issues within the walls, so they didn't find this out until they began the installation process.
The bottom line is that before you buy your pocket door kit and begin your project, do some research into your home and know what is behind your walls where you plan to put your doors. This could save you a lot of time, money, and hassles in the long run.