I stopped in at Sammy's to continue my reuben adventure around Charlotte, and I found (for not the first time) if you order two of the same thing, there's no guarantee both people will get the same thing. One reuben was pretty good all-around, while the second reuben had bread with a weirdly chewy texture that significantly altered the sandwich (maybe the bread was old?). The corned beef and kraut were pretty good, but the cheese was almost non-existent as was the russian. The bread had good flavor, but again the second sandwich was almost hard to eat at times (we switched just so I understood - she wasn't lying about the bread).
If you get lucky and get the good serving you'll be happy with a flavorful reuben for a reasonable price. If you get the other one, you'll very much regret your order. Good luck!