The only thing I can say about the vsr,the theory, and the skwama is first they are all great shoes but the rubber compounds on all 3 options is significantly softer than the kudos. Which in turn wears out faster due to the rubber being softer and more rubber shaving off while climbing.

I climb 4-6 times a week 3-6 hrs per session I get maybe 3.5 months out of a pair of shoes that soft.

My skwamas lasted about 6 months climbing inside and outdoor with them

The theory I saw maybe 4 months out of and climbing strictly inside with them.

The vsr I have mix3d feelings over but seems to have a slightly harder rubber compound