Mini camp invites mean nothing - the same thing happened last year. Especially with the Giants, they're really doing it more to give these kids a chance to experience the big league camp life. The Giants aren't looking for a right now solution, they're looking for those connections to be built so that down the road, they can attract these guys if they come back up north and make it big.
If I'm a CFL GM, the only guys I've moved around on my draft board are Smith, Abdesmad, Colquhoun and Bouka (who wasn't high to begin with)