I'm overall really happy with this bra, it looks gorgeous and is quite comfy and supportive. The plunge does mean that I get a bit of "quadra-boob" if I'm moving vigorously, but it's rarely an issue and it's quick to adjust.
Unfortunately, I'm running into an issue I didn't anticipate: because my torso is quite short, the top of the bra is always visible on the nape of my neck. As in, peeking out from jumpers and tshirts. I'd have to wear a turtle-neck to hide it... So unfortunately, while the straps don't show under tank tops (as I was hoping), the top clasp is always showing on the back of my neck. It also means that by the end of the day, I'm feeling a bit of pressure on my nape where the clasp sits.
Since the straps adjust at the front, there's nothing I can do to change that. So it's not the "invisible" bra I was hoping for.
I'm keeping it because it's overall still quite comfy and pretty, but this limits my clothing options with the bra quite severely.