cx_773er,
Cathay provides a P2X endorsement when you qualify as an S/O. This is a simulator only rating and qualifies you to operate as Cruise pilot only.
If you have a look at the minimum requirements for entry into Emirates , Qatar and Etihad, you will see that S/O time is not highly regarded.
From Emirates website mins include :A minimum of 4000 hours total flying time (may include 25% P3 or FEO time to a max of 500 hr).
If Cathay is able to schedule Longhaul flying with 1x capt, 1x f/o, and 2x s/o, which may be the case shortly. Upgrade time could exceed 6 years ( already been stated above). If this happens then the time to reach the minimum requirements for the Middle East carriers is probably 10 years. To be competetive , probably 12-14 years.
Do you wish to waste 10 years of your life on a poor contract with Cathay, only to start at the bottom of another carrier? It does not make much sense.
To remain at Cathay for your entire carrier will not give you a comfortable lifestyle until the 15 to 20 year mark when you eventually make Captain ( if you pass the upgrade).
In the meantime unless you remain celibate until 45 or 50 years old you will probably have to factor in a wife and family. Are they going to be happy to share an apartment wil other guys. How about living in a 600 sq ft apartment for the next 15-20 years.
If you use a bit of common sense you will see it is not a logical career move.