nickurfe23, zchan, and MoneyWellSpent, thanks for the thoughtful responses. It's interesting to me that the "rough" Finch has the single sole while the calfskin Shelton has a double oak sole. So while the Finch would be "just another" Rough Collection shoe, it would be my only casual shoe with a single sole. And while the Shelton would be my only calfskin casual shoe (assuming Tan Elgin and Cognac McTavish are both cowhide?), it would be another with "clunkier" double soles.
So is it just the leather quality that makes them "fit into the same niche"? The part of me that's drawn to the Tan Finch is the same part that drew me to the other two Rough Collection shoes, so it's a battle between "go with the one you were drawn to first" and "don't keep getting the same type of shoe".
Also, if I'm honest, part of the problem is a feeling that I better get the Finch now since it's discontinued. But I'm not sure that's a legitimate enough reason, since if I got the Finch now I likely wouldn't get the Shelton later.
Yeah, the single sole on the Finch was actually my only negative on it. I think the split-reverse welt adds some substance to it's profile, so it still looks perfectly balanced in my opinion. I just like the idea of a double sole for durability sake. The Elgin and McTavish are definitely both made of cowhide. As I said in my previous post, I think the sole on the Shelton looks rather refined in spite of being a double sole due to it's rounded profile and traditional welt. I think the split-reverse welt on the Finch with it's natural color contrast against the tan upper actually creates a similar level of heft and therefore they are about the same in my opinion regarding "clunkiness."
Yes, I think it is the heavy leather combined with traditional men's dress shoe styling that puts all of them into the same niche (color differences aside). I absolutely love every Rough Collection shoe that was introduced last year (not as much of a fan of some of this year's introductions), and I think there is enough differences between them to warrant having all of them if your budget allows.