Just saw one at the local rental yard. I've used tow-behinds about a dozen or two times.
If you I think you can see the charts for reach, vertically and side reach.
The extra articulation can be useful.
Easy to tow these lifts, and can get them into some tighter spots. Wonder if they don't have less ground pressure, too. Your chip truck can be a separate unit adding some flexibility to your set-up over a chip/ bucket truck combo, and if needed, you can dump chips while the bucket is still working. You will need an extra vehicle though to tow it.
Might be able to move it through narrow areas with a loader or tractor, or just a regular truck where you wouldn't get a bucket truck through.