While it will be nice if E* gets the Viacom suite of HD channels lit up by Wednesday, I'm not concerned about it personally. I don't expect existing Dish HD Absolute customers to get any of those channels once their added to the Dish Network lineup.
The addition of the Viacom channels on its own won't be enough to get many of us HD Absolute customers to switch to a different programming package. Other noticeably absent channels (like the ones from News Corp., Rainbow, etc.) will have to come along and be properly added into the TurboHD packages.
When packages like TurboHD Silver and TurboHD Gold build up more channels than what HD Absolute carries then you'll see a lot of grandfathered customers change to newer, more up to date subscriptions. Right now there is little incentive for HD Absolute customers to switch.