I'm doing this right now. We do have a product to display but it's not the minimum viable product yet - we hope to release that in about a month.

My approach has been to explain what we've got at the moment, what we're building and what we're capable of. The conversation is less about making a sale and more about getting an expression of interest. When we release this will you buy it? Why or why not?

Feedback has been invaluable so far and looking forward to following up with all of these warm prospects at the end of October. :)