From the headline and seeing that you are a customer support company, I was expecting to read about how the different approaches can benefit users. Boy was I wrong.
We do believe JS UIs if done right can be very usable. I think thats why Gmail is so popular right now. I would love to discuss more with you and push a post later.
[1] https://chrome.google.com/webstore/detail/amenlkcfjlmchdpogj...