Kenda tyres? You’re brave. All the ones I have came with warning stickers about the sealant de-laminating the tyres. Having experienced the result of this recently I’ll stick to Maxxis and save my hearing/heart/face.
I don’t believe in those crazy aerosol things, or even CO2, too many witnessed and personal bad experiences with them. I carry a tube and a £3.99 short plastic pump. 2 minutes gets the tube in there and inflated. I’ve won races after puncturing, there’s little excuse in my mind for a DNF when it’s a puncture.
Practice, practice, practice. Buy some Schwalbe Marathon Plus and practice getting those on and off the rim fast, you’ll make your fingers bleed at first, but you will become very good at getting normal tyres off nearly instantly.