From my brother tonight:
"OMG! It's literally the most perfect top sirloin I ever made. I say that a lot, but it truly improves each time and this one is definitely the top! As good as any rib eye I ever had for about $5!"
He smoked it for 40 minutes, rotating every 10, and seared in cast iron.
He said the red wine reduction took 90 minutes but was well worth it. 32oz wine and stock down to half cup of sauce.