Oscar:
Welcome to the Forum, and good luck with concluding the formalities for obtaining your new R9.
The standard pressure for 9 x 19 mm established by SAAMI is 35,000 psi. The SpeerŪ - Gold Dot "Dive" Ammunition 9mm Luger SOC 124 Grain GDHP is not supposed to exceed that level. I would therefore assume that it would be safe to use in your R9. However, since it is a subsonic round intended for spec-ops work, including underwater opertions, I'm not sure I would use it as a carry round. If you have 1,000 on hand, though, it certainly would be tempting to do some serious wet-pack testing. If you do try it out at the range, please post your observations.