Yes, it does look like they used a similar mold to Gaim's helmet, but it still looks pretty cool. And it does contrast Mars well.

I fucking love his design, and Color scheme. Him and Mars/Malus look totally awesome.

I think he will still use the conventional Sengoku Driver to transform and the bracelet is just exposed kinda like how Kamen Rider Skull had his fedora out.

The rider looks kinda cool. Reminds me of Jiban.

Cool

I actually like this Rider's design more than Mars', mostly because I'm more partial to usage of the color silver than Gold. I know the Gold Apple Lock is supposed to fit better with the "Forbidden Fruit" lore, but...Silver, blue, and black is just awesome. On the other hand, I get the feeling his weapon will be about as useful in battle as Gridon's hammer.

Mars looks better, honestly Mars is one of the best suits in the whole of Gaim, for me.

The resemblance to Gaim's helmet is striking. I hope there's a good reason behind it.

They do tend to have the main rider designs as a basis for these movies.

Sorry if this question has already been answered, but does this movie take place in an AU (like Ryuki and Faiz) or is it part of the main storyline (like W)?