Separate fuse holders are for the birds. Switches should have the breaker built in. It means less wiring, and gives an immediate trip indication because (usually) the toggle goes down. An exception would be an ignition off-on-start switch, because breaker/switches don't normally give 3 positions. Industrial waterproof switches run $15-20 and will never fail with our usage. All that said, I use a keyswitch at the lower station, that can lock out the upper station start-stop switches if needed. I can let the kids up there without worrying that they will start an engine.
1975 32' Flybridge Sedan, twin Perkins 6-354 diesels, 1:1.53 velvetdrives, 16 X 19 props. Merritt Island, Florida