I practice in a open group, we have Wiccans, Druids, CR, Heathens, Indiginous folks and a whole lot of people who remain loosely affiliated, and I myself was raised by a heathen and an atheist, and am a lot more mixed in heritage...

Eclecticism, sycnretisim and Chaos always seemed really natural to me. If people from different cultural can mix and celebrate together than why shouldn't we be able to do it is individuals. So this is what I think...

Not everybody approaches cosmology the same way, not even clergy in the same group. There are lots of approaches when it comes to combining practices and beliefs, and people use them at different times. It is much more of a spectrum than a discrete structure... and we can all still be friends.

Eclecticism and Chaos Magic are very loose, this is like taking what you want from a practice and leaving the rest behind. Syncretic practitioners often look much more deeply at practices and blend them into something new, you find this a lot in Solitary Wicca, where a specific cosmology is overlaid on a Wiccan ritual structure, or when people fill in the gaps of reconstructionist practices with more modern things.

Lots of pagans have some 'multi-traditional' practices, It all depends on how much of your practice and belief system is separate as to weather or not you would take up the label for yourself.

People do practice things separately, some more than others. I know folks who are really rooted in reconstruction that still go home every year for a good old fashioned family Christmas and get really involved in the whole thing. Some have separate shines and do different rituals for different deities, I know lots of people who are involved in multiple groups, or who's spouses belong to another religion or tradition, but they still practice as a couple/family. In the wide world, many immigrant and mixed families blend practices or observe religious traditions separately but still do them together.... It is a mixed bag.

Weather or not you could work it all out logically in your mind, has largely to do with how much you believe the cosmology to be absolute truth. For many pagans there really is not that much in the way of a cosmology to begin with, and many consider it to be allegory or metaphor, and a large part of paganism is rooted in romantic era revivalism to begin with, so it is not really a problem for a lot of people.

For me and my practice it has become less about 'if the land is in-fact the goop of an egg that was laid by a goddess, and more about why is it so important to keep telling these stories.'