> >This keeps me from having to use smart objects and layers in >PS. I guess this is the way someone with LR4 would do it.
Yes, it works well in both ACR and LR. The Auto Mask feature works extremely well in my experience. For a subject like a bird, you can use a pretty large brush and as long as you don't move the cursor into the sky, you're fine. Even if that happens, just switch to the erase mode to clean things up or feather things out.