If you like Ubuntu/Linux more, then just install Ubuntu/Linux on the computer without Windows. Why go through the additional layer of Windows?
Perhaps the use case is limited to people who need to run Windows/Mac-only software like AutoCAD or some Adobe software.
This is exactly the type of thing that many people want.
I used KDE 3 and Gnome 2 for many years (Windows also). and switched to LXDE/OpenBox after KDE 4 and Gnome 3 turned out to be unusable.
Although my current desktop is very simple it has become one of my best desktops ever because it can be configured to the extreme. It is very suitable for developers who want a clean workspace which doesn't get in their way like all the other modern desktops (Win 8+ also) which focus more on eye candy than usability.
For this project, I could choose the programming environment. Well, my tool of choice, for the past 10 years, has been Rails. I prototyped the application on my MBP within 10 hours, but needed to be able to work on the site with my corporate laptop, so I setup a Linux VM, and setup 2 networks (one host-only to share files, and one NAT'd to get through the corporate firewall), configured the folder shares, and got everything going the "VirtualBox" way. It's a pain.
Like a lot of Fortune 500's, the IT resources are locked down to the point of being combative. There's no way I can take my MBP to the office and work on the company LAN. (You can get an exception, but you have to ask for special permission every single day.) This project SUPPOSES to allow me to open a shell, install RVM, install Ruby and git, download my sources, bundle install, and do `rails -s` to do development. (The application is just using sqlite for the database, so I don't even need to mess with MySQL for now.) If everything works like it should, I can just use Sublime Text 3 as my editor to work on the files, and host on the Linux subsystem. When it's time, I can `git push` my sources to the TFS server, and deploy them on the Linux VM running in Azure.
So that was kind of long, but this is how I see it working and fitting into my world. Against my better judgement, I'm letting my gaming rig (re)upgrade to 10 to try this out. I don't know when my company's IT department will standardize on Windows 10; we just got 8 last year. I just want to see if this can really fill the niche it supposes.
Or many, many games.
No, it's an incredible pain in the ass to get this working properly, when I could spend 20 seconds rebooting
It's might be hard to setup few years ago, but now it's super easy. With AMD hardware everything just work out-of-box.
Having people in the company run different OSes cost a lot of money because of the duplicate tools that has to be adapted or created for different OSes.