Yes, Flapjack makes a really important point that regardless of which house Saturn is placed in, this planet brings to our attention the authority of the state, which comes with its own set of values - a kind of collective ego. Some with Saturn Pluto aspects (especially hard major aspects) may side with the status quo and try to quash anything which threatens it (often becoming savagely Plutonian in the process, despite their valuing of proper conduct); while some side with the Plutonian passions lurking within collective consciousness and go all out to challenge the status quo and the authority which seeks to preserve it (often becoming very rigid and controlling in the way they go about it). Both planets work together - if the native disowns one, it will still make its presence felt as the owned planet is expressed.
When the aspect is wide, the connection is less compelling. Where it is a soft aspect, the tension may not be so great. Progression of one planet to the natal position of the other is not very relevant because it is so slow with these planets. But solar arc directions, at around one degree of arc per year, could be significant; for example, if the orb is 5 degrees, then one planet will reach the other by solar arc around age 5 years. Transits can be very significant if the orb is wide at birth, especially if it is transiting Pluto that conjuncts natal Saturn after birth, rather than the other way around.
Greybeard reminds us that retrogradation may be signficant. When these planets are around a conjunction with one another, Saturn is retrograde for most of the time that Pluto is retrograde. And of course a particular sign is emphasised, which says a lot about what types of social values are under the intense spotlight of this transiting conjunction. The house placement of the conjunction in a natal chart, and also aspects to more personal planets, shows how the changes - or the frustration of the need for change will affect the native on a personal level, and how the native may play a part in bringing the changes about. A native who has Mercury aspecting the conjunction may study social taboos and write about them in a way which helps to provoke change, and perhaps to establish a new order to some extent. Venus may challenge people's notions of relationships. And so on. Because of course after the initial hit of the transit itself, which makes its presence felt according to the aspects it makes to the natal charts of individuals, nation states, etc., the entities born under the transit grow up and continue the process of restructuring.