Would you suggest that IP be secured before engaging in this process?

Bear in mind that these presentations are the first step in developing relationships with prospective investors, and that these presentations are given in a public setting. Most investors are interested in your company as an investment opportunity; they're normally not consumers of your technology. As a result, many companies find that they can give effective investor presentations without divulging proprietary data.

Having said that, each company must decide what intellectual property needs to be protected, and what proprietary data should not be disclosed in a public setting such as the Angel Capital Summit. If you're not sure what data to protect, consult a qualified specialist.