I've been running Ubuntu dual booting with Windows 10 Pro (originally Windows 7 Ultimate) for a couple of years on my desktop, and it works pretty well. It was easy to set it up myself, and I'd be very surprised if Geek Squad encountered any difficulty.
The one thing I've found is that Ubuntu occasionally has difficulty connecting to my WiFi -- but if I boot Windows firs, connect, and then reboot to Ubuntu, that always works fine.