68 Bigbird Quote; No, it really isn't what pro's ues for a car that will sit waiting for completion.
Actually, I just got off the phone with the paint rep and as an afterthought I asked if the pros are still using wash primer. He said, "Of course, they aren't going to pay $150 a gallon for our good stuff to just clean it off!".
Of course, I always use the good stuff when I'm building a substrait, and I'll stop just short of showing the product info because I'm not recommending it for the situation described. It's just too darn expensive to leave all of it on the floor!