Pretty awesome for situations where you can have the car supported on its wheels. Even if you needed a wheel off, I suspect it would be easy to arrange with a jackstand on one corner.
Still, roll off could be a risk, and I'm just not a fan of stressing the car body putting 1/4 up like that. I think it's an easy way to cause steering pull and misalignment. So question becomes if factory Jack points for a garage jack (like a center front and center rear or differential case) can get the axle up high enough to do two at once.