Justin Falk played his junior hockey here in Spokane, and was a member of the 2008 Memorial Cup champion team.
He's a big kid at 6-5, good reach, and plays moderately physically. If he used his size/strength more, I think he would be more effective. As Lapa mentioned, at best he's a third-ish pairing defenseman ... should serve in a similar role to that of Leopold, a #8-#9 guy on our depth chart, but in contrast to Leopold, is more of a defense first guy.
He's from Snowflake, MB, and some of the fans around here used to compare his play style favorably to his hometown. Hopefully he's developed a bit more of a mean streak since then.
I have to believe he's just a stop-gap for the rest of the season, and unless he steps his game up considerably will be a free agent when the Jackets get some of their guys back.