For those interested in security - AMP basically forces the iframe javascript sandbox security model.

https://www.html5rocks.com/en/tutorials/security/sandboxed-i...

Even reputable web pages tend to have a metric TON of non-sandboxed javascript from third parties. If you care about your security this is a risk.

If you stick with AMP - this is - by spec - prohibited.

Something to think about as you browse the web gobbling down javascript and all the other third party javascript being pumped at you.