Did it take you $80 worth of time and material, when I looked at the one from Matt / Grizzly Outdoors... I about choked...I love my Cold Steel shovel. Like you, had hard time finding a good sheath, so I made one. The shovel resides above roll bar, driver side rear, affixed with bungee.
Would you mind sharing your details, a lot of us would have loved a detailed DIY video on making something like this... looks great, nice job !