I can't find a more specific place for this question, so here goes.
I'd like to be able to control whether an app, such as BBM or WhatsApp, has notifications in the pull-down panel, without affecting the sound or LED notifications. I know it's easy enough to turn off ALL notifications for an app; and there are utility apps for controlling things like LED colors. But I haven't found any app that allows me to have ONLY sound and LED, but nothing in the notification panel. I don't think Tasker can do it either.
Is it even possible?