In Windows CE you can use LCL-WinCE widgetset. In Android indeed you need to use LCL-CustomDrawn and then you are limited to the controls already implemented. Bug reports are welcome.
Besides that, you can also use the Custom Drawn Controls directly, in your LCL app and then link it to either LCL-WinCE or LCL-CustomDrawn. This will make your app skinnable.