Not the first time I've had a fluke handle get broken in shipment. But super glue doesn't work on the type of plastic Fluke uses. Has to be epoxy.
Well now here's the thing, you might very well be correct, I don't know,
but I know that in the case of the HP handles, unlike most plastics which will stick almost instantly with superglue, the HP handles did not. But after leaving them in a clamp for 24 hours or even longer they did bond really well and they have never come undone.
Looking at the plastic prior to glueing, I would have predicted that they super glue was not suitable because the fracture in the plastic has such a high glossy appearance to it. I have also successfully used the same technique on oscilloscope handles, not DSO ones but proper analogue ones, and had no problem in carrying the scopes around with the handle, so there is a chance that the Fluke handle also respond in similar fashion if you were to try it.