Finally got some time with my new 48, here's what I found:
200 rounds, mix of GECO 124gr FML and Federal 147gr- 0 malfunctions. Despite being much slimmer and lighter, still very comfortable to shoot and not snappy at all. The trigger on mine is pretty heavy but seems to have smoothed out a little (take this with a grain of salt as the carry G19 has a Taran Tac trigger job). It's pretty accurate and easy to shoot. Here's 50 rounds of 147gr at 7 yards:
I was aiming between the eyes, so I still need to drift the sights a cunt hair to the right. Also it's a little low, probably due to using 43 sights- Glock now offers tritium sights explicitly for the 48 which I might be trading out for shortly.
My GF has a hard time shooting semi's well (strangely she's a murder machine with my S&W 581 .357), but she shoots this guy really well. It's noticeably slimmer in both slide and frame, and it's got a really comfortable grip. Yet it's got the recoil impulse of a G19.
The only drawback after shooting it a bit is slide bite. I shot Glocks for years with no issues, then after carrying a VP9 for a year suddenly my grip has changed and I need beavertails on my Glocks. I'll work on my grip a bit and see if I can correct it over time- either that or just get used to missing a chunk of my hand.
I carried it for about 24 hours with the Vedder Holster it came with and can tell you with absolute certainly that it's a very noticeable difference vs my G19. Much much easier to conceal and lighter. I can easily carry under a t shirt, which is impossible with my G19. The previous owner didn't think it really had anything on his G19, but that's where it really shines and I'm happy to finally have a CCW that bridges shooting and concealing well. Hell, it even seems to draw faster than my G19. I'll be ordering a mag carrier ASAP (I usually carry a spare anyway), as 10+1 isn't bad but I'd have a much bigger piece of mind with another 10 rounds.