I’m the hold out. I like things that match. It insures where one piece is serviced both would be service.
And it looks cool, that’s an Italian thing, it doesn’t matter how well you do something as long as you look
good doing it. :-)
Of serious concern I would makes sure that they are at least gas compatible. If the regulator 1st and 2nd stage are nitrox compatible, so too should the octopus.
BTW "IP" as stated by Latitude is "intermediate pressure" the pressure set point on the goes out of the 1st stage on the way to the second stage/octopus.