The Uruguayan trained with the Portuguese international for nearly a week in La Manga before the pair played together for a half against Stevenage last Wednesday.
Gus likes what he sees so far and suspects that the supporters will take to Postiga.
"He looks good - at the moment he looks very good. He looks like he has the skills of a typical Portuguese player and maybe a bit like a Brazilian.
"He likes to get the ball and likes to play one-touch or two and he can do a few tricks that I am sure the supporters are going to love.
"We haven't played too much eleven-a-side so we don't really know his speed or movements. He looks very intelligent though and I think he is going to be a very good player for us."
Postiga's settling in process is being assisted by Gus himself, along with fellow Spanish speaker Mauricio Taricco, who he can easily communicate with.
"I think we are teaching him more Spanish really! It is good to help him, he knows a few words and is trying to learn as quickly as possible.
"At the moment we are trying to help him along, to settle down, and Christian with his Italian can communicate a little bit as well."
Gus concluded by insisting that Postiga will thrive in the Premiership environment of great players and large and passionate crowds.
"He will enjoy it - he doesn't know yet what he is going to be part of. When we start playing he will see every stadium full, the pace of the game and the quality of the players in the Premiership.
"He is going to really enjoy this experience."
Gus Poyet says he spots a hint of Brazilian style in the play of new striker Helder Postiga.