I prefer clear and consistent boundaries. Because of my BPD diagnosis, many professionals have feared that I disrespect boundaries. So now I'm hypervigilant about boundaries. Plus, if boundaries keep changing, I'm bound to ruin into one and then both me and my T would feel bad. In this case, I would rather thing be in black or white.
My new T has some hard boundaries and some fluid. I found her email boundary on accident. No emails on weekends. She didn't even know it was a boundary until I did it

And now phone calls are similar. I'm allowed to call her as much as I need to until she's realized I hit a boundary. It sucks. But at the same time, it's better than not being allowed to call...