Chances are the clincher tyres you now settled on will go on without using levers. I've mounted 25mm and 28mm GP5ks on a couple of different rims and they were always easy. I only carry a lever in my spare kit because it makes it quicker to fish out the tyre to get it off, but also that is feasible by hand only.
Excellent, I too only carry a tire lever, as an emergency use item. So far I have not had to remove either front or rear tire since receiving these wheels in dec/21,might pull the front off and just deflate and remove it to see what the current tire/rim interface is, the GP5000 tires will be here Saturday.