I dont have any pictures that I can show you. Since you are a lefty, you will want an 8 o'clock holster, I'll bet. I don't know jack about left handed holsters, but for leather (not plastic) right handed holsters the ones to beat are the Milt Sparks Versa Max 2, Bullman Gunleather's IWB and the Alessi PCH. With those models, a 155-165# six footer like my brother and myself can hide a full sized 1911 under a T-shirt, so long as we move properly (bend at the knees and such). I suspect that at least some of those holsters are available in LH G19 models, especially because they are custom holsters.
Thats literally all I know on the subject, but its a good start. I never really bothered to look into Glock gunleather or LH gunleather. Hopefully some lefthanded Glockers will be around shortly to expand on this.
Oh yeah, SOB holsters supposedly cause spinal injuries. Everyone seems to have a cousin/friend/coworker who is in a chair cause they fell on their gun, but I have never heard a firsthand account of such. I still don't want to research the matter the hard way!