It will likely appear as a positive, but I doubt to the extent of an ambrotype. The silver in a wet plate collodion emulsion is kind of whitish under reflected light which enhances the reversal effect seen in an ambrotype. I presume this is the result of the developer used for the process which is ferrous sulfate based. I wonder how liquid emulsion would respond to this type of developer? I've never worked with Liquid Light or similar products.