Correct hand stack: on vintage models gen and rep are the same and the hand stack is correct:
6542 and 1675: (from the bottom) GMT/Hour/Minute/Second.
From the model 16570 onwards this was changed on the gen by introducing a quickset and the unmodified rep-movement is not able to replicate it.
Advantages on the rep with ICHS: the GMT function works and can be set independently in 1 hour increments as it is supposed to; the movement be it a 2813 or 2824/2836 is reliable; the date changes at midnight; My take on this: there is a lot of overblown hype around it, it doesn´t bother me at all and in a Years time You happen to "see" it maybe 3 or 4 times; if You´d ask a gen-owner without looking at his wrist to tell You if the hour hand moves over the GMT hand or below it he would not be able to tell, it´s a rep-forum issue; it´s visible twice a day for some minutes in a 24 hr cycle, otherwise only on sharp and overblown pics with the right angle;
Solution: if it really bothers You, You can always set the GMT-time to do this at times You are not around strangers,
Rep with CHS correct hand stack: as above 6542 and 1675 vintages are correct and reliable anyway;
Modern GMT´s: mostly unreliable, specially if You use/set the GMT time; as the hour hand is used to put the GMT-hand this is modified and geared to turn in 24 hrs (instead of 12); with the modification the hour hand gets disconnected from the datewheel so the date will not change over when the hour-hand crosses midnight; personally this would bother me more and probably it´s more of a tell than the ICHS. (what was the hour-hand is now the GMT-hand on the CHS 2836); As long as You never set GMT-time this will work, You may damage the movement on the very first time You set GMT-time independently.
Beware of yet another model where the GMT time cannot be independently set: the GMT hand always moves as 24 hour indicator together with the hour hand and there is no way to independently set the GMT-time. The only way to use it as a GMT is if the outer bezel (sometimes used for a 3rd time zone) is turned and it´s neither very functional nor does it look right.
On a side-note: the ICHS/CHS debate has been going on for Years while only in 2015 the much better silver paint on the outer bezel numbers was introduced, before it was just simple white instead of sparkling. Imho that was much more of a tell than the ICHS and still it was the latter everybody was worrying about.
On another side note: my 16570 ICHS Explorer II, besides the red Tudor Blackbay is one of the rep watches I´ve worn most in public in the last couple of Years and the ICHS simply has been a non-issue
![Smile :) :)](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)
Use it and be happy...
The 2nd pic is much closer than wrist-distance