It's a nice looking watch, probably my second favorite SARG, after the SARG007. As a replacement for the SARB field watches (Alpines), however, these two SARG's were just a bit of a let down, IMHO, with lower WR. Sort of took the more robust edge off compared to the SARB017 and 059's.
But were the SARG's around long enough to become "classics"? The SARG's came out in 2013, and the 009 you are referring too (and its siblings) came out at the end of 2013. They are larger, more "modern" sized cases (>40mm x >47mm), compared to earlier Seiko mid-teir watches, like the smaller sized SARB line (<40mm x <47mm).
While Seiko has put a lot of emphasis on its dive watches lately, and re-introduced some, albeit oversized, classics, they seem to be loosing their way a bit when it comes to true, robust built, field watches, like the Alpinists, and the military "Hamilton" style SARG009. This style seems to be only found now in the 5 series and other lower end Seiko's. I don't see a mid-tier, robust, Seiko pilot style, with a clean look, like the Sinn or Damasko 3 hand, non-chronograph watches.
Only the SARB017 is left, hanging on by a thread, to those bygone days. Something tells me that will soon get retired as well, perhaps to replaced by a more modern "interpretation": another hockey puck with Monster hands, that might be robust enough to survive a brief encounter with a lawn sprinkler.