Hmmm...
Honestly, as a Canadian I can say that I am a mixture of the two. When I am talking about distances, I am loving the metric. We are bombarded with that. I am old enough to remember very early on being taught the imperial system... so I know what an inch and a foot are. Talk to me in meters.... I may be lost. Can I tell you that a room is 3.25 meters x 3.25 meters, or 10' x 10'? I would say the latter.
OTOH, if we are talking about overland movement, I would be better with meters and kilometers. We just went 500 meters? Sweet. Halk a kilo. That I can get my head around.
Encounter distance? 3 meters away from my opponent? Wow, now I am getting a little bit confused. (Not really, but now I ACTUALLY have to think.)
Also, I weight 220 lbs. Don't ask me how many kilos. I have no idea. I am 6'2". No idea in centemeters either.
So, it is different strokes for the folks.
As for the blog, it is interesting. I am all for the smaller tactical space, as it makes more sense. 5 feet is a LOT of space to think about. Especially when you tell me that someone cannot occupy the same space as me.
Sandeman