Has anyone here written iphone apps using an AWS EC2 Mac Instance? (it's legal)

I couldn't find much when I ran a search on the forum, so I'm posting this.

There's an AWS EC2 Mac Instance (this is a fairly newish thing):

https://aws.amazon.com/ec2/instance-...!!g!!mac%20aws

As you can see it claims that you can, in fact, write "apps for iPhone, iPad, Mac, Apple Watch, Apple TV, and Safari".
(It avoids the problem with the MacOS EULA by running on a cluster of Mac Minis)

So I'm wondering- has anyone here done so?

Feel free to point me at another thread, I might just be bad at finding them.

I'm trying to avoid buying a Mac, and compared to the price of macs (and having shell out cash when they upgrade their OS, which isn't a problem here.), this looks cheaper depending on your consumption,

thanks