The rail could be mounted atop a missile container.
I assume a not overly noisy small UAV gets less attention than a turbojet powered 350kg or what cruise missile. Also the question of datalink angles, sensor view angles, and if the Delilah is capable of continous operation at all.
Really don’t think the accountants would like it very much to scout with a missile. Perhaps against targets that are roughly known, but not if you don’t know if anything is out there at all.
But yeah, a Dvora would not be my number one launch platform for a cruise missile. Better put a Penguin onto it.