Think so +that would be epic!
Aren't devil fruit powers primarily magic though? The omnitrix can't scan magical beings, and since it doesn't really change their DNA there's nothing special to scan.
He might be able to. When Luffy ate the Gum Gum Fruit, he became a Rubberman, so maybe some Paramecia type Devil Fruits would work, specifically ones that alter the eater's body.
*scans devil fruit* Hellberry transformation!
What do you think?