Mint is also a British thing for roasts, but generally (in my experience) as a side sauce - a spoon of mint sauce or jelly on the side of the plate.
I toyed with the idea of incorporating it into a BBQ sauce, but decided it might be too overpowering.
One thing I missed out on with the holiday experiment - I didn't take a pan with me, and didn't want to use the accomodation's pans in the smoker. So I didn't collect any meat juices, which is what I normally do when cooking pork. I am thinking perhaps some kind of sauce incorporating fresh berries of some kind into the meat juices, with a mint mayo on the side. I think blueberries or cherries would work, or - as I think someone (somewhere) has suggested - pomegranate juice.