Egalitarian Family Blogging?

Something occurred to me, in connection with the local attention that Bobby Rozzell's Douglas and Main link-blog has received, thanks to the Wichita Eagle. And maybe it's a self-interested observation, but still...it has to do with the fact that Mr. Rozzell has been following the blog of both my wife and I, with actually fairly little cross-over. Which makes me wonder: just how common is it for a married couple to maintain separate--and more or less equally busy--blogging lives?

I'm not talking about both partners contributing to a joint or family blog; that pattern is very well established (one of the very first blogs I followed regularly, John and Belle Have a Blog, was such an example), and it's gotten to the point now where half my extended family members do just that--though amongst the mostly traditional husband-and-wife pairings in my family, it usually turns out that nearly all the posting is kid-related, and nearly all of it is done by the wife. And actually, even outside of those more-or-less consciously traditional marriages, the same pattern I think seems to hold generally: J&B is pretty much entirely Belle Waring's blog now, while John Holbo posts almost exclusively at Crooked Timber. The same, I think, could be said of Halfway Down the Danube, which is pretty much Doug Muir's sole playground now. Maybe there's something structural that makes it difficult for public husband-and-wife blogs to maintain their "jointness" over the long haul. But in any case, I'm talking about something different: not shared blogs, and not roommates/lovers/insert-your-preferred-term-of-choice-here blogging separately, but actual married-with-kids families where both the wife and husband are bloggers, and both keep it up separately over the long term.

Am I wrong in thinking that Melissa and I are unusual in this regard? I can only think of one other married couple I know of where both blog in different places, and do so more or less equally. If it is unusual, does that tell us something about egalitarianism in the family, following in the grand tradition of some great recent posts by Laura McKenna and Harry Brighouse? Or is the whole issue so ridiculously narrow (oh look, another blogger blogging about...blogging!) as to have no statistical relevance to the real world?

What say you all? If nothing else, give me some examples that might help make a case, one way or another?