Oh, there definitely are Retinas with Ektar lenses.
But they're only good if the camera hasn't been too mistreated. And they often are
I love Ektars. Especially the 5-element heliar variants used on the Medalist.
The Ektar on the Signet 35 is the one I had the most trouble getting to grips with, but this was mainly down to an iffy shutter and user-error.
The Signet 35's Synchro Shutter is also pretty limited in my opinion and rather sensitive to dust. The shutters on the retina's certainly are more reliable.