CustomPress upload field - non-image files need representing

As discussed here:

https://premium.wpmudev.org/forums/topic/custompress-non-image-file-converted-to-file-type-thumbnail#post-1006618

CustomPress includes custom field types which are very useful, one of which is the upload field. However, if you upload anything other than an image using this field (such as a PDF or zip file) there's no easy way to retrieve the file or provide a link to it.

The OP in the link above found a way to retrieve the attachment using the ID of the custom field for a post, but this is pretty fiddly. It would be great to see some enhancements to CustomPress to support non-image files through the upload field, such as providing a method of retrieving the URL via the embed codes, possibly from a new property?