On-demand product demos and evaluation: Useful for startups at YCombinator?

We released a new widget for our product that runs directly within a company's website, and allows their prospective customers to request a fully functional server image directly from the site.

It's a great sales tool, especially for complex applications that normally require large install files, database setup, complex configuration etc. and are therefore difficult to share with a prospective customer (think IBM or Oracle products).

To show our widget I took out 2 minutes to create a basic demo. Feel free to request a machine on this test site so you get an idea of exactly what we do: http://dl.dropbox.com/u/16347737/yComb.html

(I have only set up an Alfresco ECM demo with the sample above, but essentially any windows/linux app would work here).

My question: Would this be useful for the startup you work for -- why or why not?