Well, the amount of BP in the regimen does a pretty good job of drying out your skin, so I feel like you should probably worry about the future dryness (that will pass!). Dan's moisturiser is pretty liquid-y, so I guess it's not a "gel"? Personally I'm not a fan of Dan's moisturiser. I also have fairly oily skin, but I get by using Cetaphil's derma control oil control in the mornings. CeraVe's also nice and light on the skin (but it broke me out so I don't use it - many people do though!).

Tips for managing oily shine while on The Regimen. http://www.acne.org/faq.html#oily