You wouldn't need a pressure suit for 1.5 atmospheres. Divers handle that pressure well enough for rather extended time periods. You would, however, need to be encased in what is essentially a thermos bottle to not freeze to death within seconds because of the cryogenic temperatures. The density of the temperature means you lose heat from heat exchange, as opposed to just radiation in a vacuum. This would make heat insulation a very serious problem for any human presence.
It would be perfect for machinery though, with practically no corrosive effects from the atmosphere.
In theory, the cryogenic temperatures would allow heat engines to operate at a very high efficiency, and the surface temperature is low enough for current high temperature superconductors to work. The low gravity and fairly regular weather makes structural requirements very light for unmanned structures. There's literally oceans of oil that could be used for a chem-industry. It'd be a useful source of resources in the saturnian system. Ideally, an automated one.