Welcome to the FOG...
I think you'd have to clear coat it with something...?
When you apply Surfix, it cures at a gloss sheen level, then as you burnish it into the wood, it transforms into a matte level. The same would happen if you applied another layer of Surfix, it would again cure with a gloss, but after some foot traffic, it would start to become a more matte looking finish because basically you're burnishing it with feet & shoes rather than white Festool pads. [eek]