I’d be surprised if they don’t work and shoot very well. I saw a royal some time ago in the countryman, personally I didn’t like it, but strangely I do like the mtr model, especially the 16 inch version. It’s an oddball I suppose, but there’s just something about the mtr that I like the look of. A bit of a heavyweight though. Each to their own, if you like it, go for it I say?.