I would suggest you browse through articles & databases at a Seiko "specialty" forum first:http://seikoholics.yuku.com/forums/69/Japanese-Watch-Info-Database/Japanese-Watch-Info-Database#.VC9JZ1fhjNE
There are many designs of Seiko cal. 6139 (as used in the "Pogue") and 6138 (adds a long-term accumulator, 12Hr) chronograph calibres. These were, as you may NOT know, in the 1st generation of auto-wind Chronographs!
There are also Flyback chronographs from both Seiko (7015, 7016, 7017, & 7018 calibres) & Citizen (8100, 8110, and 5700) from the '70s which are quite interesting.
Thus, you may find that you come across a design you like even more than the "Pogue"!
The movement of any of these is in NO great danger of "wearing" whether or not the chronograph function is left running. Yes, some watchmakers advise that you should leave the chrono running, but periodically run the watch with the chrono function stopped (to "clean" the brake for the chrono seconds hand). But, in either case, you should not have to worry about anything "catastrophic" happening to the movement
Nice to see you getting interested in these. Now, when you scan the database on the Yuku/Seikoholics site you'll also see that Seiko & Citizen both had nice "affordable" watches for the masses ... but they also produced some really high-quality pieces in late '50s thru mid '70s (and still today) ... and Seiko did VERY well at the Swiss Observatory competitions thru the '60s! Those items are every bit as good as almost all the "better quality" Swiss products of that era. I personally like many of the Grand Seiko, Kings Seiko, Lord Marvel, and many of the better "Seikomatic" designs ... and the Citizen Chronometer models.
Also check out the discussion forum that goes along with the Seikoholics database, there are some good articles there. There is also an older "Seikoholics" site with good articles ... in one of those sites the owner does discuss the chrono "wear" issue you brought up.
Orient also had some quite high-quality items in the '60s (though no chronographs), mainly sold in the Japanese Domestic Market. You can see some of their items in the database I linked to as well. I've collected some of those as well.