Anyone tried any Conversational Landing Page?

Hi,

I came across Drift conversational landing page recently and figured out a few more startups have such a product.

So I was wondering anyone tried a conversational landing page before?

What was your use case? what type of product or service you were marketing?
How was your conversion rate in comparison to your previous landing page?
Do you still use it? Do you recommend it?
Do you think conversational landing page (or what I call it content on demand) could be a trend in near future?