What is the point of using the launcher with apps that are portable already?
I started using PortableApps some time around 2007 I think, but I never really used USB flash drives that much until relatively recently (for work). Now that I have rediscovered PA, I have realised that they can also be used with my synced folder, which I use for all my other portable apps, command line programs, shells, scripts, etc. So I have found just how incredibly useful PortableApps portable apps are.
I have not started making any of my own portable apps, but I am going to start doing so.