I have very strange skin: very dry on all areas, except for my nose, which is oily.
I look fine, no dryness or oiliness, still a beautiful, dewy/matte finish!
I am very sensitive to Bismuth Oxychloride, and these products do not contain this material, so no bad reactions either.
They key is to use a good moisturiser that is suitable for your skin underneath your makeup, and really wait for about 10-15 minutes before you apply your makeup. I use a Clarins lotion on my face, which is especially for dry/dehydrated skin.
I have no problems with wearing MMU, but I do think it's best to apply a very little bit and use more layers, than apply more and use less layers. The less you use, the more natural and flawless your end result!