While I'd encourage you to indeed use the search engine, I'll tell you my similar experience.
I took 2mg suboxone (prescribed) in the morning around 8-10am. By about 1-2pm, so roughly 5 hours later, my cravings were eating away at me (when I'm on 8mg/day of sub or more, I have no cravings, otherwise the further below 8 I get, the more intense the cravings get) and I considered getting dope. I got a bag and did a shot and I got about 60-70% of the high I would've gotten had I not been on sub. So yeah, it's possible for some, but it also depends on how much sub you took the prior 2-3 days as some will still be in your system and contribute to blocking.
Overall, I wouldn't recommend it. Stick to your sub, stay clean.