[lousken]

From time to time I have to use 64kbps on my cellphone. At that point the biggest pain in the ass becomes first loading and in that classic HTML app shines, it loads a LOT faster - if you have 1.5MB page or 600kB makes a huge difference. But once it's all static content is cached it pretty much doesn't matter if it's XHR or full page load since I'm loading only tens of kBs at max.

Also if I have to use 64kb I completly disable js in my browser and whitelist just a couple of websites - best adblock on mobile.