SciFi changes their menu around fairly often, which is one of the reasons why we eat there on almost every trip. The food is consistently good and we appreciate menu evolution. I've enjoyed the reuben in the past too, but they have lots of other good options. My husband got a prime rib sandwich on our last trip which is described as follows:
Pastrami-style Smoked Prime Rib served on Grilled Marble Rye with Grain Mustard Coleslaw, Caramelized Onions, and Swiss Cheese
It was great and had I not known it was "prime rib" I would have sworn he was eating a reuben sans the sauerkraut of course.