According to The Wrestling Observer, the TNA Gut Check segments are a work, but they are a lot closer to a shoot than anything else on Impact Wrestling.
The report notes that the segments are given bullet points as opposed to being fully scripted, however the talents are NOT informed in advance of the outcome, just like it would be on a reality show. Both Joey Ryan and Alex Silva had no idea whether or not they'd be voted "yes" or "no" by the judges prior to the taping of the segment.