Should I master snowboarding or go back to skiing?

I was a confident and fast skier when I was kid up until 15 where I switched to snowboarding. I never mastered heel side on snowboarding but I also haven’t skied in like 15 years.

Going to SLC for a half day next week and wondering which one I should take a lesson in. Is re learning skiing or learning heel side on snowboarding easier

If I had more time I’d try both but appreciate anyone’s feedback :)