Just popped into the local Kia dealership to take a look at the EV6 they have.
Colour me impressed with the looks - larger and more aggressive in real life than in photos, but still kinda wagon-like (in a good way) in the way it's hunkered down compared to the standard high-riding SUV.
I definitely prefer the interior to the Ioniq 5, though after the airy spaciousness of a M3 thanks to its glass roof, the Kia feels much more enclosed.
As I feared, though, the boot isn't the most spacious - deep enough, but that sloping back kills its overall space. The rear seats can be angled forward a bit which increases boot space, but it's not particularly comfortable sitting like that, and not great if that's on a long trip (which is when we'd need the boot space!).