Generally, I don't pay too much attention to boutique loads that are upwards of $1.50 per round when it's simple to find something that meets FBI standards for 1/3 the cost.
I'm always skeptical of gimmicky ammo; especially if the promotions include "tactical," "zombie," "tango," "death," "destruction," "energy," water jugs spraying water all over, shooting fruits and vegetables, etc.
Not a hater. There's a lot of potential for machined all copper bullets yet to be explored. For example, the Barnes XPB bullets (ex. Corbon DPX) are consistent performers (although expensive).
However, the only serious thing I see on the linked site is a shot of their .45 into ballistic gel on the bottom of this page - Videos | Oath Ammo .
If it's a standard block, the penetration is woefully inadequate (maybe 9"?) and it's all I need to see. And frankly, about what I'd expect for a rapidly expanding, light-for-caliber (low sectional density) bullet. Conveniently, there's no measuring tape shown in the video. It also looks like it fragmented (another -1), rather than staying in that nice star, fully expanded shape the bullets are shown in on the site. Still skeptical here.
I haven't tried out any of their ammo yet, but I may have to give it a shot once spring rolls around and I can shoot outside again. I'm intrigued by it...