For anyone interested, two Japanese reviews of the figure have popped up.
Before checking either site out, be aware that there are possibly NSFW images on the sites due to model/action figure reviews of female characters in very skimpy attire. Visit the links at your own discretion.
The first one at
Unoyo's site shows the figure in great detail, noting differences in paint apps and up close shots of the face sculpt,and a side-by-side comparison of Buster OP and normal Leader OP. It also shows the fuel tank gun transformation sequence.
The second one at
Otaku Haiyuu shows more pics of Buster OP combined with Leader Jetfire(note that both reviewers chose to use the reversed feet fanmode configuration for the legs).