This might sound paranoid, but make sure switching the hoses doesn't void the warranty. I actually had a dive shop give me pushback on some work on my Apeks when I customized my regs with different hoses and some Trident brand HP and LP 1st-stage port adapters....that was some years ago, and that shop is since out of business...just sayin'.
You cannot be serious. This like telling someone they cannot add their own washer fluid to their car. No wonder the place went under, it was run by morons or thieves.