Of course it would DMcG. So would just washing one's bottom over the toilet bowl with warm water and drying oneself with a towel. Are people totally incapable of improvising nowadays?
I think a complete lack of toilet rolls is the very last of our worries. Getting in food supplies such as fresh fruit, vegetables, milk and eggs etc is going to become tricky.
We're lucky living in the countryside, as several villagers keep hens, and there are farm shops not too far away that sell lovely vegetables. Our two village farmers have dairy herds.
But I realise that people in large cities are not so fortunate.