I'd say that most CDs don't take care to make themselves as presentable when in male mode because they don't really care about their male mode. They only care about their female mode.
Explaining it from my point of view, I think that the ultimate objective of every CD is to go out always crossdressed. And since CDs are in my opinion the most gullible to male/female stereotypes, as in the end what all want is to be that female stereotype they envision, when they go out in male mode (most not all) they do it in a very stereotyped way, as if males don't need to care about being pretty or beatifull.
This is my perception though, I'm not stating an absolute, just from personal experience. I'm extreme myself on this issue as I totally disregard the typical male look, and when I'm forced to go out with it, I don't care how I look. All I want is an absolute female image and yet still identify as male (I have no female persona, I'm male always), so my case is a bit particular, as I don't think that an image has to be male or female exclusively, so not sure if I would be a good example as what I truly want is the destruction of such stereotypes. However, taking this into account, you can pretty much see what I'm trying to say with this statement.
I hope my post is not confusing, I'll make things clear if needed with a second post.