Lo Scarabeo decks don't closely ascribe to any system. Most basic books refer to Rider Waite imagery and interpretations, which often doesn't conform to the imagery in LoS decks. I've learned to take LoS decks at face value, using the imagery to guide my interpretations as even the LWBs don't often correlate well with what I see in the cards. I have that deck and from what I remember it's not all that RWS-based in its imagery.