I ran studded Hakka 8s on the Impreza last winter, and they were amazing with freezing rain. I had, some, control over the terribleness that is freezing rain. Like, actually stopping at a red, being able to slowly start and manoeuvre around town in a controlled fashion.
The mr2 has studless winters, previous owner said it was manageable, so we'll see what happens. From previous experiences, it's on the ice where studs pull ahead, and being newish to Chinooks, a concern is the thaw and freeze cycles that make for some slick ice.