There shouldn’t be a need for really difficult control to borrow a CGM on a one off basis – they’re a great tool for getting an insight into what’s happening when you’re not looking (ie between blood tests, overnight) and for spotting patterns you hadn’t seen before. If the patient is committed to doing that, I don’t see why they should be denied that tool to try and improve their control.
Although I suspect you’re right @lizz , the likelihood they just don’t like @mike 