Regarding declining magstripe transactions: a friend of mine had a card with a literally broken (in half) chip. The magstripe still worked fine for many purchas

Regarding declining magstripe transactions: a friend of mine had a card with a literally broken (in half) chip. The magstripe still worked fine for many purchases in the UK, in particular, he never had any issues withdrawing cash from ATMs. So my guess is that cloning the magstripe onto a card with a deliberately broken chip will work in many situations.