“I think that when the lies are all told and forgot the truth will be there yet. It dont move about from place to place and it dont change from time to time. You cant corrupt it any more than you can salt salt.” - Cormac McCarthy
Yeah, I'd go with the Universal for the BlackBird. I ordered the universal, but got the Speer model. It worked out because I was ordering it for Genuine Draft to use on the AT and she was sleeping in my TrekLight without a ridgeline. She was able to seal it partway across the top using the velcro (similar to a peapod) and she liked that, so I didn't have a reason to return it. The only difference is the velcro along the edges and since it won't seal over a ridgeline, there's no reason for it with a BlackBird.
"If you play a Nicleback song backwards, you'll hear messages from the devil. Even worse, if you play it forward, you'll hear Nickleback." - Dave Grohl