SVG for logo?

We’re not so certain it will work correctly but if ever not, you can just convert it to another format.

@onlyincebu: It would be great if SVG support or non-support can be 100% tested and ensured.
Are you using something similar to RealFaviconGenerator?

SVG is a valid format for schema.org markup. However, the best way to be sure is to submit your website to Google’s Structured Data Testing Tool and check if there are any errors under Organization.