(For me - and probably many others - though I use 1password since the beginning, have 50 tabs open so sync is a challenge and never understood to use the profiles, perhaps I'm too stupid or the UI is bad)
When it came out I thought profiles was a good idea, eager to use it, but it's often difficult to say what is in what profile. AWS is clear, and banking, but reading some articles? For me to work the UI would need to be smooth so I don't need to switch profiles just because something is in the other. Perhaps I'm not focused enough ;-) It then was too complicated for me to use and switch and I dropped it.
Writing this in FF, where would I need to click to switch profiles? I have a drop down on the right (it's not in there), I have a drop down on the left (also no profiles), I have a menu at the top(can't find it there) and a drop down in my sidebar (no profiles in there).