I don't know who drawn that CG but I don't think its the original artist (fill me up if he is the one) If they are planning that however I hope they'll try match the style of the CG's to the game.
There are only 2 guys in this project and only 1 of them is responsible for art - and its Kuja. This CG is done by Kuja as well.
All art is done by Kuja basically. CG pieces are done in another style for some reason - I dont understand it as well.
Basically this style is the one that they use in the main menu and in status screen where you have your stats and saves e.t.c.
I agree that a lot of styles is a bad thing for the project (Monster Girls quest for example was a Frankenstein's Monster in this regard), but it may have strong negative effect on you right now, since it is the first animated CG implemented atm. In the future they plan to do more and maybe if there is more they will feel more usual (?). Idk jsut a thought.
Personally my biggest quarrels with this cg are these:
1. Its kinda slow;
2. For some reason the place of interest (being K's butt) is centered somewhere to the left instead of being in the center of the screen;
3. The lizard on the CG being Cenvir does not look like Cenvir at all. Within the game Cenvir's head looks much more attractive (his head is too square-ish);
Honestly I too would've prefered this event being done in a normal simplified style. After which we could've possibly gained this CG as a separate reward in gallery or something.