[Sheriff Gonna Getcha]

Not to get too legal, but the witness' criminal convictions will likely be admissible.

A witness' criminal convictions actually get admitted most of the time. In federal court, which admittedly has slightly different rules of evidence than Florida, a witness' criminal convictions are relevant for the purpose of showing character for truthfulness. Only when the prejudice of introducing such evidence substantially outweighs its probative value (of showing character for truthfulness) will the evidence of the conviction be denied admission. While courts don't want "bad person prejudice" to infect a trial, in federal court, there is a presumption that criminal convictions carry significant probative impeachment value.