According to the devs vanadium is preferred for security, something about Firefox not having comparable sand boxing (?). Not sure, they wrote in length about the reasoning but at a certain point my eyes started glazing over.

I’ve been using Firefox for a long time on desktop and mobile, so when I switched to graphene I just kept with it.

I may try to switch over to vanadium though seeing as I’m already in “switching” mode.

Me too! I’m using graphene, are you?