HP
Not always true about the exclusive use of QFE in the MATZ. Prior to the change to QNH at BZN (OK not actually a MATZ but not a factor) the civvies were allowed to use QNH in the same pattern as the rest of us on QFE . I always wondered about the potential for problems with a 300 ft airfield and 500 separation and mixed settings. Now that BZN uses QNH one would be forgiven for thinking that the potential for mix up has gone. Unfortunately there are exceptions allowed -visiting FJs if memory serves.
Isn't the main point that QNH is the one system that covers all cases. What do the FJ mates set at Kandahar ? I do get the argument about students but do those at Shepard (spelling? ) in Texas have problems. IMHO the reversion to QFE (was it in the nineties) was a backward step.