I was in this dilema before and chose the MC wapity in the end and am very very happy with it. I LOVE it!!! I sometimes, though rarely, use it inside another bag. I usually use it for a night or or when I don't feel like carrying a purse as a "grab-n-go".
However, I think if your needs are leaning more towards keeping it in another bag to carry makeup, I would get the mini pochette instead! It seems much easier to get things in and out of. Its more convenient. As much as I love my wapity, I tend to fumble with it a bit in the bathroom. Unless I have something to put it down on and then take things out, I find it a very slight fuss to get things out Whereas witht he Mini Pochette, the bag is very open and opens completely so its easier to hold it in one hand and take thigs out witht he other. HTH.