The biggest roadblock for many in creating a custom domain is that Searchie doesn't create SSL.
Some people can't use Cloudflare (and don't even know what it is 1/2 the time), and they're stuck with a custom domain that throws security errors for the hub user and it looks like phishing. The lower level isn't providing the SSL certificate properly either.
If Searchie provided SSL, maybe this would be a much smoother setup process and more people would use custom domains (which is what they want with branding etc).