Sometimes folks may discover that a particular pistol may 'feel' differently when actually being fired, than when being handled at the counter ... and sometimes it may be for the better, and then sometimes it may be for the worse. That's why I like to try one or two examples of any model/caliber pistol before I actually consider buying one.
Personally, I feel the G30 is a bit fat in the grip for me, although I could certainly 'make do' with one, especially if it were an issued weapon and I wasn't given a choice.
Having handled and fired a few of them I wouldn't be interested in spending my own money on one, though. Just me.
I knew a small group of L/E folks who were issued some new G30's and given some 200gr +P ammunition with which to practice and qualify. I watched half a dozen of them experience what I suspected were wrist & grip stability functioning problems on the range, and several of them complained about the dimensions and ergonomics of the grip. Last I heard, they had decided to exchange their G30's for G23's, and were using one of the better brands of 180gr defensive ammunition.Seemed more satisfied. Perhaps it was something about the size of the grip, combined with the felt recoil of the high pressure ammunition, that influenced their decision. Not my business, though.
I've seen a few Glocks experience broken extractors, and at least one of them was a fairly new subcompact. Things happen. That's why they produce and sell spare parts, you know.
Also, BTW, the Glock instructor in the armorer's class I attended was very clear about making sure people did NOT drop a locked-back slide forward on an already-chambered round which had been dropped into the chamber through the ejection port. He warned that doing so risks damage to the extractor hook, sooner or later. Definitely not a wise practice ...
Deciding whether or not to choose one for a lawfully concealed defensive weapon, or a personally owned & authorized off-duty weapon, really rests with the individual making the choice.
I know a fellow working for another agency who had carried a G30 for several years, and really liked it. After I replaced a spring & follower in one of his magazines (feeding issues) and installed a NY1 spring (his preference), we were checking the functioning of his G30 on the firing line. I let him have a chance to shoot my G26. He was very surprised that he was immediately able to shoot better with the G26 than with his well-worn and trusted G30 ... and when I next heard from him I learned he had bought a G26 of his own and retired his G30 from daily plainclothes usage. Offered me a good deal on it, but like I said, they're just not for me.
Different strokes.
Try and rent one and see how you like it. Your call ...