Ok after checking one of my miners after 24 hours on wireless, it's showing a change of 31M bytes sent and 53M bytes received.  This would add up to ~84MB of data use a day (and is a little shy of the post before but the math is somewhat close).  Again this is just connecting to a pool and mining, not using the machine for anything else.

  Just thought I'd share in case if anyone else ever wondered.