So, yes we have nighthawk read CT and U/S.
We read our own Xrays (every type you can think of.. so know chest and your typical ortho...) and they are over-read the next day.
We have no U/S tech from 2300-0700, so it pays to be handy with the 'ol probe at least
BUT
I VERY FREQUENTLY find that nighthawk misses IMPORTANT CT findings. We have the advantage of seeing the patient, examining the patient, and knowing what we are looking for. I've found all sorts of rib fractures, spinal fractures, pelvic fractures, ischemic gut, pelvic abscess and other things NOT called on the initial nighthawk read. As well, sometimes you wait 1-2 hours for the nighthawk read-- in a critically ill patient, in a setting where you transfer out to tertiary care, it is helpful to be able to interpret your CTs at least enough to get the ball rolling on treatment. I.E. Thats a clear dissection, obvious PE, obvious SBO / appy / perforated divertic / etc.
So I strongly encourage people to learn CT reading-- its fun to correlate it to your patient, honestly.