I also have a new 10-round with binder plate. I haven't shot out of it but I did stick it into the MDT ACC chassis to see if it would fit (was comparing AW magazine).
Going to keep the one with the binder plate until my other mags I purchased show up, otherwise I have no mags to shoot out of when my barrel gets here this week. I'll let you know if I end up selling it. (Might switch to just AW mags)