When i come to calgary and stay at the hopwell holiday inn I usually grab dinner here.
Granted it's a bit pricey, but you can ask for the lunch menu and grab a steak sammie.
It's pretty good. The steak is usually very nice and the meal over all is excellent.
Often times the place has happy hour specials as well and very proffesional great staff.
As far as a steak sammie goes my #1 is still 328 Tap in victoria, but this is decent too.
Their 1800 deg searing system should be in every steak house.
I only deduct a few points for the following:
The bread of the sammie should be more dense like a home made heavy sour dough.
Loose the lettuce and tomato under the steak. Although visually nice it takes away from the steak.
Toss a few capers in the Caesar to make up for the lack of anchovies and boy you'll have winner.