duckmilk
You could leave them proud and lightly sand the edges kinda like Greene & Greene style.
Good call Duck! I was looking at the joints this morning and think this is the answer. Having the protruding ends eased will eliminate any concern that it will look unintentional. I think I'll use a sanding block and knock the sharp edges off with a chamfer to the same depth as the protrusion. It's a lot of fingers to sand but I think it's worth the time. Should only take about 2 beers 😉