Etiene, Sönke,
Thank you for your solutions, much appreciated! I just couldn't find this in the documentation, although input(data-bind='username[value]') was obviously there in the Jade docs.
I'm more inclined in using vibe.d as a restful api server at this point and consume the data from another server holding the front-end application.
However I am very interested in checking if there is any performance gain in serving the html and assets with vibe.d. This forum for example seems crazy fast :)