Anyone deploy Pi-hole in the enterprise?

I just recently heard of pi-hole and while I plan to implement it at home, I was wondering if anyone has implemented it in the enterprise or smb (obviously on better hardware than a pi)?

I have contemplated it but internally with 70,000 employees it wouldn’t scale, We are using a anycast DNS internally along with other DNS techniques to remove single points of failure and reduce the number of round trips for DNS lookups.

There are a few deployments out in the wild in enterprise situations @DanSchaper would know best