There is normally only one power source to the igntion switch. If the engine turns over then No, the fuse would be after the igntion switch. If the engine does not turn over then yes, the fuse is before. On many GM products, there is a fuse link that supplies power to the igntion switch via the main fuse block "Hot all the time" portion. There is a fuse marked "IGN" that feeds the ignition switch.
You can manual use a jumper between a known hot power location and touch the ignition switch side of the realy coil. I have a test jumper with a fuse installed. That way if I touch something wqrong the fuse will blow rather than the wire melting down. This can be done using chassis battery, coach battery or power off the converter.