We're investigating a specific use case in which our customer's sales force goes to his client's offices and is regularly unable to connect to any network (cellular/wifi...). On site, they need to show sales stats ("you've sold that much of that category") and input orders (complex/configurable products, complex pricing rules, complex document generation).
We know that the mobile applications have offline capacities, but that customer is reluctant to use tablets or phones for that. And we're not entirely sure that the offline reporting engine will provide the required stats.
A looong time ago there was an offline client, long gone now.
Has any of you recently worked on a project like that? What road did you take?