I've not handled a "bite-out" item yet (Oreo, coin or card) so I can't speak to the system. I'd appreciate a PM with an explanation of it. What I can say is that the two main systems I know of are Hondo Chen's and Blake Vogt's for flap aka acro cards. I don't know whether one of them might be simpler than a "bite-out" item's mechanism; if you PM me with the "bite-out" mechanism I can tell you whether one of the above two seems simpler to me. I should mention I'm new to this; most posters here are more experienced and can probably give better answers. Are you familiar with both Hondo and Blake's methods? Their videos are good and reasonably priced.
I've purchased Hondo's download and also materials directly from him here in Taiwan, and have made a few of his style. As to Blake's 'acro' cards, which use a completely different method, I've picked up the key material from my health care provider but haven't had time to make some with his method yet.
I assume from your post that you already know card splitting; otherwise I'd recommend Blake's splitting videos volumes 1 & 2, which I've also purchased here. His teaching style is very slow and good.