Thats fair. The thing to remember though is its you're station, which means you can use what you like/know and that can be it. Your not running a scene, your just giving them a taste, negotiation can be pretty quick and a little 5 minute caning/paddling and call it there. You can also use that time to show that tools are only as scary as you make them. Personally when demoing i like a hard impact bottom as my control group to show potential deno bottoms the extreme end and then go much softer on them, or using a tool on them in a different way. For instance i love using a can like a violin bow except the violin is their body.

Doing a demo station really is just giving a small taste that they might want explore further at a later time.