I love the Createx line of products. That being said, I would never use it as a topcoat. It might be useful as a layering tool - although T base is probably more receptive to additional layers. For newer painters, it might give a nice preview of what the topcoat will look like. A coat after the main paint job might be nice before addition of a fin. Then if you mess up the fin, you can wipe it and try again.
For an indoor topcoat, any epoxy is fine. E-tex and Devcon 2 ton are popular. Drying time has to be thirty minutes or more to allow for leveling. A lure turner is just about a must - have, but easy to make with a microwave turntable motor, which turns at just the right speed.