I was told that a Sea Kayak is easier to roll than a white water yak(we were in white water ones). A SOT would be tough because you are so high(low up side down). A Pungo might be tough if it doesn't fit well. You might fall out, or unable to roll the hips because both knees are holding you in. Only one way to find out. I obviousely don't have that much experience.
One cast can change your day...maybe your life.