I'm the only guy using the metric system in the engineering department, and I'm not an engineer.
Month/Day/Year makes for a quicker evaluation than Day/Month/Year. By putting month first, you know in which part of a year an event is. Whereas with days, they repeat every month, so little info is gained at first. If you wanted an even step of units for dates, Year/Month/Day would allow for a quicker grasp of what is important than Day/Month/Year.
For example, if the first number is 12 in the date for a gig, I start thinking Christmas concert. When I read European concert dates, I end up either reading them right to left, which is backwards from how I read the numbers, or I go middle, right, far left.
