Has anyone tried these?

They look like a well made product. I was thinking of investing in a pair
Lift Stand Inc | Made in the USA
I have two of the Lift Stands, plenty of support for an auto and safer than ramps, and I use two wooden stands like Woody's. The lift stands cradle the tires so no chance of rolling off.
However, I am not comfortable using them on the Silverado 2500, whereas the wooden stands are rock solid.