Nice job on the holster. It`s not the size of the DE that makes it an unlikely carry gun to me it`s the weight. Both the .44 Auto Mag and LAR Grizzly are about 20oz. lighter! Odd that you should say the Auto Mag is larger,was the one you carried an 8"? Even so it`s slimmer and much lighter. I carry mine from time to time in a Bianchi X-15. The 5.4" Grizzly is a piece of cake to carry IWB. I`ve done that for days at a time (for giggles as much as anything else). It`s pretty impressive how well you`ve been able to conceal the massive .50 DE though. More power to ya.
Marcus