Well I think your reference (among many others) make it clear that s1R unequivocally DOES chaperone proteins. The distinction you are trying to make falls apart on this and because: 1. S1R is a protein 2. Its chaperone function is mediated by protein-protein interaction and translocation (reference provided upon request).
I do find it a bit amusing that I'm the one taking the AVXL line on an issue.