Seriously, how hard can it be to bring both a personal and corporate card on a trip, and use each as appropriate? I've never had an employer issued cc but it's

Seriously, how hard can it be to bring both a personal and corporate card on a trip, and use each as appropriate? I've never had an employer issued cc but it's baffling to me that some employees have no problem personally guaranteeing company expenditures. I can imagine all sorts of scenarios, including a complete unexpected collapse, that would leave the employee out to dry.