Thank you for the advice! I will endeavour to remember and implement this suggestion when I next get the chance and if Nautilus re-enters the picture as a more satisfactory file explorer than Dolphin.
However, I must note, and I hope that you and/or other readers will take this as a constructive suggestion, that more needs to be done to make the user experience more uniform and/or more obviously configurable so that if people want to evaluate desktop environments and applications without constraining themselves to using the "official" applications for a particular environment, then this can be done without needing to have an intimate knowledge of every environment to hand.