I have used them for years. Not only a great product and reasonable price and good people that stand behind there stuff. search using my name and you will see.  Its the best system I have found if you use other tools besides festool.  I have one hose covered with PET braided sleeve and one without for sanders. The braided sleeve is great for not snagging on corners but adds a lot of rigidity (depending on how tight) you stretch it. I have mine really tight. 

I have one of those hoses in my shop in one of the drops from dust collector for quite a while now and works great.  I cut the hose down to manageable length (small shop).  I didn't like the click connectors as I would never use them so I epoxied them solid and kept the swivel.  The epoxy failed eventually so I cleaned, reapplied, and drilled and put in a couple of fat pop rivets and it's solid now

The tool fitting end works great on Domino and sander where they go inside the fitting.  On the track saw where it goes inside it's kinda meh.  I started twisting it into the twist lock harder and it stays put better but is still not perfect.  Have to check/tighten periodically.  I also use it for my router table and it works great.