I'm actually testing Enterprise for the company I work for, along with Office 2016, and I plan on deploying the new Win10 based Server as well as Exchange Server in XenCenter-based VMs on a pretty decent server we have here.
Oh, yeah, lol, BTW, Brink, I'm employed full-time as of last Sept - only took 14 months after graduating with my Masters lol!
Anyhoo, Win10 has come a long way, and the current laptop that I am testing it on, a Lenovo ThinkPad E550 (Core i7-based machine - pretty decent for an enterprise-class machine) already has a slew of drivers for it, and the Lenovo System Update app is now Win10 ready as well.
But....It is still a bit buggy - and the fact that (currently, of course) clean installs have to revert to the 10074 ISO is a major PITA....
I really despise the idea of .ESD upgrades for enterprise...not really that fond of it at home either, although my (now getting ancient) Beast Mark V is doing rather well with Win 10 TP (non enterprise).