Orion might not be a finished product but it's been my daily driver for a few months now and I had very few problems during that time.
I'm mainly a Linux user but I like to use my Mac because of software like Orion and I'd willing to support it for more than the current $5 per month, if that ever happens. I already pay for e-mail and now search with Kagi, so browser seems a natural extension of that.