Yes you can, nothing can stop you. You do not need to inputs package in order to have datetimepicker. You can go ahead to to get any javascript datetimepicker and implement with KoolReport. We create the package like inputs for developer to save time only, for example the inputs' datetimepicker will bind user selected value to report's parameters, and also make the value persistent after post back. Those functionality you can create yourself, just take a little time to do.