The question greatly depends on whether you need to predict the AUF as well. A lot easier to one look if you don't need to predict the AUF. However the experts certainly do predict AUF.
Even though I know EG1 and CLL, I can only 1-look about 1 in 20 solves in the 15 second limit. If I have 1 minute to inspect the number goes up dramatically. I can't predict AUF at all.