I am a lefty and I own both the CZ 85 and HK P30l. I have a stainless steel cz85 and also bought the conversion kit. It is reliable and good for lefties. Reliable, accurate and good looking. The only thing I would critique is the quality of the stainless as it seems to peel off where there is friction. My gunsmith took care of the problem. Still, I recommand the combat version... But it is left friendly and the main reason why I bought it. I just love the safety under my thumb as I shoot. It just seems more stable for the follow up shot. It is the one I use the most for plinking and warm-ups.
The h&k is more left friendly as all is ambidextruous plus the decocker at the rear CZ doesn't have a decocker.. The mag release is different and requires (for me) practice but I love it more and more as I practice. The grip is fantastic and the ambi decocker is something that I like too for IPSC competition. The only critique is that the mags and parts are suppose to become more and more difficult to get in Canada (what I have heard on gunnutz from a supplier). HK are expensive for what you get. Just a little more to get a costum 1911.
Some people hate the h&k trigger. Again, at first I hated it but got used to it with training. If you can afford, the hk is a better option for me. I just love it period. It is cool to handle and the grip suits me better than the CZ. Noir as a very good review on youtube. I have the h&k p30L. There is also a longer version. Both are accurate and have adjustable sights. If you are interested in 1911, some models have ambidextruous safetys and mag release. I have the Kimber gold match and again, just love it and left friendly. Everything I buy has to be lefty friendly as much as I can. Some people argue that it is advantageous to fire a right handed rifle, shotgun or handgun when you are a lefty. If that was true, all weapons would be left handed for all the right handed shooters. All my carreer I trained and shot with right handed pistols, rifles and automatic weapons. I got used to the mag release on the left side. Now that I tasted left handed rifles, shotguns and handguns, there is no turning back. Everything I own or buy needs an ambidextruous feature. Hope this helps.