The Omegas have ambidextrous thumb safeties, not slide releases. Only the CZ 85 models have the slide release on both sides.
Could be something to the cracked frame stuff but I've never seen a post/thread on the CZ Forum about it happening.
As to the broken controls? CZ makes several pistols, besides the CZ 85, with right side safeties. The CZ 75 SA. The Omegas (P01, CZ 75 and others). The Tactical Sport pistols. The TSO pistols. A lot of those competition pistols have major power factor loads shot through them for thousands and thousands of rounds without breaking the frame - then again, if the frame did break it wasn't from shooting factory ammo/factory pressures.
I PM'd one of the guys from CZ Custom a couple years back when I was rebuilding my Pre CZ 85. He told me that the newer right side slide release levers for the CZ 85's would not fit the Pre B CZ 85. CZ had reports of the right side slide release levers breaking on the Pre B guns and had beefed them up by going to a larger diameter sleeve (where it fits on/around the shaft of the left side slide release) on the newer CZ 85's.
Your money, your call.
I do like the P07 and P09 pistols, too. My P09 9MM is more accurate than any of my metal framed CZ pistols. I shoot better groups with my P07 and P09 than with my Tactical Sport. As they say, your mileage may vary.