Tony, I grill too around 4-5 times a week and remember seeing a recipe somewhere for "blackened steak" using a blackened spice and a really hot cast iron fry pan. I think it was in the BBQ-U book by Steven Raichlen.
This sounds cool and I am gonna marinate up a couple sirloins this weekend and have a big ol cast iron fry pan that I use for camping to sear it up.
Never really a fan of pan frying a steak, but what better occasion to do a Pittsburgh Style.

Thanks for the info Steelcurtain!!