I know this is an older (6 years)
thread.
Metasequoia now seems to have 2 home areas in China, one of which has almost disappeared (and possibly will).
Many people have accidentally cut down a metasequoia thinking it was dead, only to have it grow back from the
roots. Not everybody has seen deciduous conifers. Larch/tamarack is another that is deciduous.
Like baldy cypress, metasequoia is known to grow in standing water. It will tolerate dry areas once established. It prefers a low pH, humusy soil. It will tolerate clay and other soils. It will tolerate a fair amount of pollution. I believe I read that it doesn't like road salt.
Metasequoia doesn't like competing for light, and it likes lots of light.
I ran across a couple of evaluations of it in terms of lumber. The wood apparently is brittle, and hence the people in question thought it wasn't a good prospect for wood.
It is a fast growing tree. Lots of reports talk about 1 foot per year, I think one report said 2-3 feet per year possible. There was a report of a growth ring that was 1 inch thick.
I seen nothing about durability of the wood, other than it was sometimes found in the bottom of some rice paddies.
There is a person/organization trying to set up a metasequoia forest on the east coast, I believe in North Carolina. He is trying to plant it in the company of the trees (or analogues to those trees) that typically grow in the "native range" in China.
http://www.dawnredwood.org/
The circumstances of where it is found in China, leads me to think that where it is found in China, is not its native range. Those 2 area could easily be fringe to where it was found natively, and it just happens that those are the last two places it has survived. I would take how well it grows in places other than these two locations in China as evidence of that.