It's a beautifully made and implemented technology that really feels like the future.... and is, sadly, almost completely unused by software developers. Unlike the 3D touch pb my iPhone I almost never use it, not because it's bad - but because almost no apps on OS X take advantage of it.
With that said, the trackpad itself is really good, and a lot better, more reliable and responsive for finger input than a Wacom touch-enabled tablet (again - touch - not talking about the stylus)