Since Sense Cloud does not allow extensions and widgets (yet) I asssume the only theroretical way to get data from an app to some kind of PDF tool would be through a file export ( in Script and the STORE command (if this command is supported...?).)
I think Qlik would traditionally ask you back "why" you want to do a PDF, since their business model is based on people working in the app... The cloud license model is quite "expandable" in terms of #users, in contrast to their non-cloud-applications.
However, since buying NPrinting they have obviously understood the need for an Export-tool.
I dont think (and doubt) NPrinting is today working with Qlik Sense Cloud, but for sure somone at Qlik is working on a NPrinting Cloud solution... if not, they should start working on it.
I will be very interested in folowing a Qlik offical answer to your question.