Hello Riley,
Thank you for interesting in our EShop Shopping Cart extension and submitting the question here. Regarding your question: Yes, EShop supports the feature to allow you setup a product in shopping cart mode or quote / catalog mode. So you can setup some products to sell while some other products as catalog / quote products easily.
I hope my answer is useful.
If you need any other questions, don't hesitate to let me know.
Sincerely, Giang