With that method, it seems it should certainly stay moist, even at that high cooking temp. Bacon and butter-- yikes!
Back in the gas grill days, I used to get those Hormel pork loins, which, in addition to being pre-seasoned, are also brined, and therefore sometimes taste a little hammy. I used to cook them indirect just with a water pan under the meat. The upside is that the brining makes them very forgiving as regards cooking time and temp, so they cook up well whether grilled high or low &slow.