Are Training Type of Swim Fins Good for Snorkeling?

We love to snorkel on vacation. When going to Hawaii we bring our snorkel and mask with us, and usually rent fins on island. Went to Aruba and it was kind of a hassle to rent fins for longer than day use. Now I’m thinking about buying training swim fins, figuring since they are shorter they wouldn’t take up that much room in a suitcase. When I read the descriptions online, it talks about improving proper kick, and conditioning.
I’m wondering if they propel as well as traditional fins? When we snorkel, we stay out for a long time and go as far as we can. Hopefully training style fins would be as effective?

My other goal is to not have checked luggage too.