"The stridsvagn 103 was conceived as a tank, developed in response to a demand for a tank, and used as a tank. It was not a tank destroyer or a “defensive” vehicle. Repeated trials both in Sweden and abroad showed that in most cases it was insignificantly slower to react to a target appearing on its side than a turreted tank was. In fact, due to its duplicated controls (the commander could override the gunner/driver’s controls and, for example, point the tank at a target that he could see through his rotating cupola but the gunner/driver hadn’t spotted) it could even be faster to react than a turreted tank without similar functionality – the turreted tank’s commander would have to talk the gunner into finding the target. The inability to fire on the move was not considered a significant disadvantage considering the Swedish gunnery doctrine at the time."
"some nerd who got sick of all the usual internet second-hand sources and wild speculation and just walked into the military archives one fine day to see what was in there"
I can recommend his blog "Swedish Tank Archives" in general if you are interested in Swedish tanknology, or in comparisons of Swedish tank with foreign ones.