Export workout as a "course"

I love the slope feature for most interval workouts. However, there are times (i.e, when traveling) when I may want to execute the workout from my Garmin so I can use my phone for other things, but of course the standard workout formats don’t specify slope changes. Perhaps a workaround would be to export the workout as a course (GPX or FIT - not sure which would work best) that could then be replicated from another device/app. Would this work?

Garmin devices have no way to specify slope percent automatically so I don’t see anyway to do this. We have a power target associated with each interval so when you export it would just be a standard ERG based workout which as you know is very different than a slope based workout in some cases.