Last year I was doing my first car in however many years, going for a 'showroom' finish applied a coat of "Future" over the top of Alclad gloss black lacquer. Micro cracks happened and I ruined the model.
As someone mentioned above, I only use that infamous floor polish on rare occasion and for specific purposes, never for an overall protective gloss coat. What made me try it with the nice little car model I had going...well, it's called laziness and impatience.
Sure glad you asked. The advice you are getting here hopefully will help you avoid what I did.