What exactly do you mean by upgrade story? The Libre Office UI hasn't changed for a long time (although there are new UI options l'île the ribbon, etc), I'd think the switch would be pretty straightforward.
I realized when posting this reply that these experiences are from over a decade ago. This was on Windows, the self upgrade option just didn't work well (large download, wouldn't complete or something, would end up reinstalling instead)
__s|2 months ago