V2 has been added. Now this changes everything, as long as you understand how the prompting works.

This locon can help to create multiple types of poses and body distorsions related to the act of swallowing a person whole. Some poses work very consistently, some less than others. I would advise giving a look to the dataset to understanding the logic behind the prompts.

Put the strenght at 0.7 or 0.8. It's the best compromise between recognizing the poses and rendering quality. 0.8 helps with head swallowing.

The main prompt is "swallowing whole". I would suggest adding precisions concerning the angle too. The vore belly can be triggered with "big belly", and i believe that adding "2girls" helps producing the swallowed body parts.
Compared to v1, this version is very versatile, and pretty much anything is possible. It's like the AI managed to understand what swallowing whole is. I would advise to be as precise as you can with the prompting.

For the head swallowing part, it's a lot more consistent with the right angle (namely, "mawshot" and "close up", or things like this.

I think things are more consistent when you precise what is being swallowed (visible, not inside the body). For example : "swallowing lower body", "ass and legs inside of mouth".

Hires is very important, otherwise the picture will have troubles rendering correctly the details of the body parts swallowed. Not any upscaler will do the trick, too. Latent destroys the picture, as do a high denoising strength. So I suggest R-ESRGAN 4x+ for the upscaler, and 0.2 for the denoising strength.

For negative prompts, I would of course suggest "easynegative" and "bad hand" (both are textual inversions downloadable on this site), but also "penis" (because she meat being swallowed is sometimes interpreted as a penis). "Letterbox" so that you don't have cropped pictures, "english text" and "speech bubble" and of course "nipple on belly" (not guaranteed). For security, I sometimes put "scales" too, because they sometimes appear on the bodies (except if you want them of course).

You can put "big belly" in the negative tags, or "narrow waist" in positive, if that's what you want. I did not test it a lot with flat bellies though.

Now, for the limitations. First off, some poses or concepts are more consistent than others. Second, you probably won't get good results on your first generation. Then, I believe that that version, although widely superior to the v1, does not appreciate deriving from a 512x512 resolution for most concepts (hires is advised, of course). Lastly, I did not test it with other loras much and can't say how this fares, and it seems that the lora forces it's own artstyle, and it's hard to derive from it.

I did not test it much with models other than AnyLora. AnyLora is great though, I highly recommend it.