Xcode does work, mostly, as you'd expect, since it's backed by lldb. And it's certainly more like VS than command line lldb is! But still, the UX isn't quite there. I found it rather limiting and fiddly to use - you don't get good control over where the various windows go, and too many things are forced to share a window. You can only see one of such things at once, and have to do something to switch to the other.

This criticism applies to the UI overall, which puts things in inconvenient places (the tall, narrow find results/compile results panel was particularly ridiculous), and then won't even let you move them, but I found it especially tiresome when debugging. This is the last thing you want in a debugger UI in my view! I want to see as much stuff at once as possible, and I don't want to have to switch between tabs unless I deliberately set things up that way myself.

There's no separate registers window (it shares its window with the locals), there's only one watch window, and the disassembly window never seemed to work very well (when stepping, execution still proceeds on a line by line basis). I recall the disassembly window also sharing a window with the source window too. I think the memory view might do that too. All in all, most unsatisfactory.

Visual Studio does have some odd limitations and annoyances, but you can at least put the windows where you like.