Marini was picked to replace Marc Marquez following the eight-time grand prix world champion's decision to quit the team for 2024 to join the Gresini Ducati squad.
The Italian previously spent three years on Ducati machinery, latterly with his brother Valentino Rossi's squad, with whom he scored his first podiums in MotoGP.
Marini and team-mate Joan Mir left the Sepang test with quite opposite sensations, with the former 1.3 seconds off the pace down in 19th while Mir was only six tenths off the fastest time.
Despite this, Puig greatly valued Marini's feedback and believes he has a method of work and analysis that makes him special.
"Luca has a very interesting work methodology. He's a very orderly guy. He looks like a German. He has a lot of method and obviously goes fast," Puig told Autosport in an exclusive interview ahead of this week’s Qatar test.
"He comes from a very different bike, but we have been surprised by the clarity of his comments, and what he likes and what he doesn't like.
"He has his priorities very schematised, and, in addition, he always provides solutions, not just highlighting the problem."
Source: Autosport