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Stretchexpert

As I mentioned in the post on barefoot training in the Lance STS section (of which I just read the rules and will stop posting my own opinions), when I jump in barefooted I realize that my feet exist to propel me.. It feels way better every single time. I sprint sometimes with barefeet too, although sprinting in spikes is 500 times better than nike frees, and loads my ankles more than barefoot sprints I'd say.

Jumping in shoes (maybe vibrams would work, and track spikes do), tend to reduce achilles action for me. I don't feel it there and asa result jump 2-3 inches lower

The reason you feel your ankles/calves load more in spikes is because spiked shoes act as "jumpsoles".  Meaning - the spike length in the front part of the foot creates a forefoot loaded walk/run mechanics and the heel will be in the air if the foot is parallel to the ground.

So they basically act like "shorter jumpsoles", making that one additional benefit of spiked shoes.

Yup. DOn't feel much calf load, ankle/achilles, I don't think I should feel anything there or if I'm even using it. Also because there is barely any heel so it does not act as a brake but allows me to transfer force without losing it as my nike frees do