You can get folding front sight posts, but as @Jimmeh stated, a red dot / holo sight is intended to be used with both eyes open, if you are looking at your target the dot is essentially super imposed in your vison, you will not notice the FSP.
I oesnt take much googling to see the vast quantity of active duty RS CQBR's running Eotechs (which run low), other sights like the Aimpoints sit higher, I find higher better if wearing goggles personally.