Aardenburg is the most authoratative resource for longevity. If you go to
http://www.aardenburg-imaging.com/wp-content/uploads/2015/11/AaI_20080716_SN007Lf.pdf you will see for yourself the results of HP dye inks. The HP 57 is a tri-color yellow/cyan/magenta cart. The sample also has some grey and black.
The result I refer to is at 30 megalux hours, which, at typical indoor display lighting, is 30 years. The paper for that test is not a swellable type.
No protective coating was applied. To me this sample seems OK for consumer prints such as weddings. The paper used may be a critical factor, but it is a current product.