My opiate history in a nutshell: Began using H in early 80s >>> switched to methadone maintenance mid-eighties >>> back to H >>> got (totally) clean early 90s >>> began using again in 2010 (wisdom tooth extraction, was given Hydros which awakened the monkey, ate the Hydros like candy) >>> used intermittently from 2010 to late 2011 (Hydros, Tramadol) >>> found a connection for H >>> ran with that for about 6 months off and on. I woke up one day in May 2012, sick, and wasn't willing to drive 4 hours one way to score so I drove 20 minutes to a Subox doctor. So to answer your question, I transitioned directly from H to Subs. My habit wasn’t nearly as bad this go-round as it was in the 1980s however. It’s hard to believe I’ve been on the subs for almost 2 years.
So take it from me, your free line of blow, while free at the time, prolly would’ve cost you big time... eventually.