I'm working on my next s&g project and have some leftover Mas and System Three epoxy/resin but not enough of one brand to complete the project. I'd like to use my Mas for the inside filets/tape and sealcoat and use the System Three for the outside glass & seal. Anyone used multiple brands on one project before? I've searched the archive but did not see a related subject. I seem to remember some posts similar to this.

Thank You All