Love my .45 Pitbull. I would be totally down for a .40. I traded off my last semi auto .40 a few years ago, but I still have 200-300 rounds knocking around.
Wonderful gun with a very novel yet reliable way to shoot rimless cartridges without moon clips. If pressed to decide between my 1911 and my Pitbull, I would most likely keep the Pitbull. The .40 has interested me as a nice trail gun for larger critters for awhile. Im more heavily invested in .45 though.
Still, I would put the .40 Pitbull up there as a gun i would snap up in a moment of weakness.