That would be cheating. If I do post the the dial side.

My dilemma is primary on the new high technology/design of nowadays compare to old style make by hand approach.
As you know there's no way you can make a spring drive movement by hand. A traditional watchmaker usually source available parts, ie case, dial, hands, movement in raw/crude state and go on to modify/upgrade to a desire state to his own standard.
I have learn that this practice has been practice way before the supposedly "in house movement mania" in the post 2000s.
I mean rolex never make any new movement since they introduce their automatics in the 40s/50s until 2004 where they release the new daytona.
They are basically a 1 movement company.
The Holy Trinity? I don't think their so called "in house movement" has existed more than 35 years.
In terms of control value chain. I don't think any company would stock more than 20% spare parts of their total production. If is something too high tech it won't be forever fixable. An example would be the those electronic board in the IT industry. When old printer/DLP projector breakdown there is finite time where the manufacturer have available spare parts to fix it. After that period all we can do is throw the thing away.
Mechanical parts can be fabricate by hand even after a long period has passed but ic board and micro circuit? Who is going to open a production line to help print just one board?
Hence my dilemma. Don't get me wrong. I love the sprind drive (got one myself) but I wonder about it's lifespan.
Tyler, in your posted example, it appears that your criteria was primarily movement finishing & long term ease of servicing. I would choose differently (without the benefit of seeing the case design) here and would base my primary criteria on the fact that Seiko controls pretty much the entire value chain of manufacture and has 20 years of R&D to support any future issues that may arise. However, if you do post a picture of the other sides of both watches, perhaps I may get seduced by Dufour so much that whether it is ETA or in house does not matter any more, i.e. the heart rules over the head.