I guess it depends on how thin it would be. I'd love a single stack DA/SA hammer fired pistol for AIWB carry. However, it would need to be thin enough to make it a practical purchase to use in summer with light weight shirts. If it came with an 8 or 9 round magazine, and the same grip height as the PCR (or P07), but the thinness of a Shield or G43, I'd buy one in a heartbeat. However, as Sig proved with the new (re-release) of the single stack P225 A1, it's easy to make a single stack with essentially the same overall dimensions as the double stack G19, but no practical carry benefit - and a loss of 7 rounds in the process.