Integrityhifi TRU-GLIDER Pendulum Tonearm


Has anyone lived with this tonearm for a while?  I am curious to see what you think of the unit.  I can see the frictionless design but I don't see how it remains in alignment while playing.  It is some very impressive "out of box" thinking, which caught my interest.
128x128spatialking
It is similar to Schroder's design but longer with no offset. It has several serious problems. First is it is very long. Long arms have much more inertia. Records are not perfectly smooth. There are undulations the arm has to follow but with longer heavier arms the cantilever does the following leading to increased levels of distortion. A perfect tonearm will move in only two directions. Up and down, side to side. It should be firmly locked in all other motions. This tonearm is not locked, it is floating and free to move in all directions at least slightly which is enough. 
Now it is trying to trade off the problem of skating for increased tracking error and longer length. IMHO and many others, it is a bad tradeoff
It is an interesting arm but I would never buy it. It violates to many sound principles that are tried and true. It also will not fit on many turntables.
Yes, I can see that.   The mass of a tonearm has to decrease as the length increases.   Most modern arms and certainly most carbon fiber arms are already low mass, so it becomes difficult for the mass of longer arms to compete. 

It was the floating part that really made me wonder how it held geometry.

Thanks for the comments!   
I have lived with this tonearm for a few months now and am enjoying it quite a bit. It is superior to the stock arm on my SL1200GAE. I am not an engineer so I can’t speak to what it should do or shouldn’t do on paper but it sounds great. My arm is 12” long and they do have a 10” version.