I'm still on the fence about the 10mm.
I have a 40JCP pistol, but also want the 40 carbine for hunting to match, then HP surprises us with the 10mm. I don't know which, as one I have ammo for already and one I'll be needing to get everything for.
Also, been checking locally to see which LGS/big box store even carries 10mm ammo. None.