Well here in the Philippines, we kinda use both because of the influence of USA and the rest of the world. We had quite adopted to both systems well. For long distances we use kilometers, meters are preferred over yards, inches are preferred over centimeters, millimeters are preferred below that. We use liters for both container trucks and "coke-bottle" sized volumes, anything between it are gallons (e.g.5 gallon water dispensers), other than that milliliter is preferred (ml) although items do have ounces in them too. Kilogram is preferred over pounds except on body measurements. Etc.. etc...
The thing is that we are kinda good in dealing with these measurements and their conversions in our head.
Fuck! (yes we do use Imperial swear words, French SI swear words didn't catch on)
