Would this be a terrible idea? {aluminum jack stands)

Mex: At $30 for 4 I imagine they are pot metal aluminum :).

I would be holding part of the weight of the van on the stands (1 or 2 wheels off the ground), so NOT using them as stabilisers, but nobody would be under the van. If a stand fails, my van would come down onto its tires and the cat and I would get startled, but I don't see any real danger. People here might envision something I don't... that's why I ask.