I will give some feedback on the CZ side of things. I have attended a couple of classes and prior to ammo and primers skyrocketing I would occasionally shoot 1k rounds in a weekend.
With the shadow 2
I tend to get around 30k rounds out of the new trigger springs. They generally break in my dryfire/training gun about once a year and I replace them in both guns. Slide stops tend to go between 25-30k rounds. I also replace extractors once a year and haven't personally had one break. I keep my guns well lubed and add oil as needed to my training guns.
As far as cleaning I generally clean the match gun before a large major and clean my training gun when it starts having issues or the slide starts to get sluggish. If you are talking a standard 75/SP-01 i would expect similar numbers minus the firing pin retaining pin as those can be damaged in dry fire.