I have a Londoner collar that I wear off and on with a sportcoat, mostly because I have ties and sportcoats in colors vibrant enough that they bounce off of one another rather well. Many Londoner-collared shirts come with French cuffs, which makes wearing them with a sportcoat tricky at the least, but since you're looking at the MTM route, you'll be able to cover that base.
The Brooks button-down (AKA: polo) collar isn't nearly as large as the LE shirt you have on, and truthfully, I haven't seen a gentleman on whom it looks bad. It is certainly one of the most versatile collars, and can easily be demoted to a casual shirt simply by removing the tie (or not wearing one to begin with)
The Brooks button-down (AKA: polo) collar isn't nearly as large as the LE shirt you have on, and truthfully, I haven't seen a gentleman on whom it looks bad. It is certainly one of the most versatile collars, and can easily be demoted to a casual shirt simply by removing the tie (or not wearing one to begin with)