Just had to try it. I suspect the type of cork and the condition of cork is a factor, as well as the shoe and wall. I have a significant quantity of homemade wine that, while quite good, is very well suited for such an experiment (relatively low cost). Four different types of footwear that were readily available were tried against a stone wall outside as it was felt that a broken bottle of dark red wine would be much less of a problem out of doors. I pretty much got to the point that there was concern that the bottle was going to break. No dice. I plan on trying with other samples in the near future and will report back.