While I agree with what you're doing for aesthetic reasons, I've found that people complain about the cost of framing odd-sized mats bitterly, and it can cost you the sale. In the case of some of my odd-sized pieces (my panoramics from my xpan) I sell them pre-framed, and charge a very reasonable price for the framing, so people will buy them as I've framed it, so I know it will be tasteful . The panoramics are the one size I don't frame with large borders, because they quickly get into oversize frames and mats, which gets expensive and/or wasteful, especially when you're framing with 8ply mat board.
Thinking of which, I now exclusively use 8ply for my own matting because it looks so much better, cost be damned.
Originally Posted by McPhotoX