Hi Ez21,
Latex and memory foam are very different and even with softer latex you will be more “on the mattress” than with memory foam which is a more “in the mattress” material with its slow response and lower resilience.
How much you are “on the mattress” though … even with latex … will depend on your comfort choices. You will sink in more with softer latex and less with firmer latex layers.
Latex mattresses don’t typically have edge support (and using firmer materials that are lower quality and will soften sooner is usually a cost saving measure that reduces the cost of the latex in the mattress) and for most people this is not an issue or just part of the adjustment period of a new mattress but typically the edges will feel a little softer because of the “edge effect” and if you sit on them you will sink in deeper than with stiffer types of materials because latex is more “point elastic” (conforming to body shape) than polyfoam.
You can see some of my thoughts about latex hybrids compared to all latex mattresses and the Alexis which has more latex than the Bamboo Bliss but is still not “all latex” in post #2 here and post #4 here which along with a more detailed conversation with BB may help you make the best choice for you.
Phoenix