Thanks for the link.
I at the very least discovered that Sling's Blue package now actually allows 3 simultaneous streams while Orange still only one, but potentially you can watch/record up to 4 programs at once as long as one but only one is an Orange package channel.
This at least means Sling is now a possible option for me. We use 3 streams every night & sometimes 4 but that is only occasionally. The big question now is will 50 DVR hours be sufficient?