Re:
Back wheel in, against the kerb, always.
Tight space, another biker bit clumsy, parking up, gives it a nudge, or even, a particular pet hate, tries sitting on it, it's likely the sidestand will fold. Every sportsbike I've owned, I've found someone sat on it, or leaning against it, at some point. Bungs only give so much protection.
Back wheel in, against the kerb, always.
Tight space, another biker bit clumsy, parking up, gives it a nudge, or even, a particular pet hate, tries sitting on it, it's likely the sidestand will fold. Every sportsbike I've owned, I've found someone sat on it, or leaning against it, at some point. Bungs only give so much protection.