Yes, the Wholesale Pricing Discount app is compatible with G:Request a Quote + Hide Price.
Using both apps, your customers will be able to see discounted prices on the "Request a quote" form embedded at the storefront. However, this requires a small integration. Please reach out to us at firstname.lastname@example.org if you want to do this integration and seamlessly run both apps on your Shopify store.
We don’t charge for this integration, it is FREE :)
Below is the screenshot of the “Request to Quote” form with Wholesale Prices: