Ask HN: printed presentation on a 10 minutes 1-on-1 pitch session?

I have an argument with a friend of mine. Imagine there will be a 10 minute pitching opportunity, held in a format of a 1-on-1 meeting (in a meeting room or something like that). There is just one person representing investor and one person representing a startup company.

Investor's representative is familiar with the target market.

He will have this pitch session within a larger 1.5 hrs session of pitches (10 minutes each).

My point of view is that it does not make much sense to prepare and print a 3-4 pages presentation, but rather use time to communicate without having to turn pages (either yourself or having investor's representative to turn them) and lose eye contact with the guy whenever he looks down into the presentation; and obviously leave a one page exec summary behind.

His point is that it makes sense to attach a 3-4 pages presentation to the executive summary and generally make him see it so he'll kinda think "wow this guy is well prepared" and it will make him remember you better.

What do you think, who's right? :)

Thanks!