I have used their service myself from time to time. A friend of mine did more regularly, running a HAAS CNC, and I remember him sticking with them for a while. Back then he had "batch" projects that would use up tooling, then he'd fix or replace things that broke, or sharpen what was dull, to be ready for the next lot.
Sounds good. I'll see if I can find an outfit like that around here.
I can't really see myself sharpening end mills myself. Heck, I can't even sharpen a drill bit decently. Sure, they work, but nothing beats a 15 minute trip to Varco for a brand new high quality drill bit. Saving up all my end mills and drill bits for an occasional trip to a sharpening outfit makes a lot of sense to me.