It's certainly not as easy as swapping headshells, but it's the easiest arm to R&R that I've ever seen. You just unplug the tonearm cable from the top of the plinth just like the other VPI's. Then you loosen a setscrew with a serrated head where the arm assembly fits into the plinth and lift the complete arm assembly up and off.
I received my DL-103 yesterday, about an hour after I posted. I found that the removeable arm feature allows an easier cartridge swap. After removing the arm I took it over to my desk and placed it on a quarter-inch thick foam pad that was kinda dense. This allowed me to change cartridges under the illumination of my desk lamp and position the arm in the various positions that I wanted. Much, much easier that squirming around while attempting the job on a fixed arm/headshell model, especially with these old eyes
Just a short update on the sound with the DL-103 vs. the Gold1. I fully realize that it's easy to confuse "different" with "better" at first listening, but I've got over eight hours of serious listening on it now and so far the Denon stands heads and shoulders above the Grado on every kind of music I've played up to this point (mostly classic rock followed by jazz and a very small sampling of classical).
More to follow.