I am not in the habit of assuming technical sales personnel will have useful things to say. Having been in some companies in the past with technical sales people, I wouldn't want to inflict a sales prospect on a dev who has other things to do.

I have greater faith in my ability to deal with a random executable somewhat safely than I do my patience for a salesweasel who might know what source code is.

So, yes, we have differing opinions. I don't see why I should have to hand over any non-essential data and deal with a human to try a purely software product.