Got my SIG 365X w/ Romeo

Is the Romeo zero sight impervious to solvents?

Picked up my new P365XL with the Romeo Zero sight yesterday and I have to report I was somewhat disappointed. I was really excited because this is my first optically sighted pistol. Pistol functioned flawlessly but it's going to take some time to get used to that sight. Biggest disappointment was the cost of ammo. $39 for a box of 50 WW white box. My only interest in the 9mm was cheap ammo but I guess that ship has sailed. I can and have reloaded 9mm but given current conditions all my stash of small pistol primers are dedicated to .357, 38 special and 38 Super. Guess I'm going to have to research 9mm ammo for better pricing.