Your preferences for switches is a million times more important than whatever theories people have about some detail in the switch's design allegedly having an effect on some specific application. You can game with Buckling Springs or Blues just fine even if they have Hysteresis. You can type hundreds of pages with linear switches just fine and still love that switch, if you like linear switches.
Also, 70gf is only fatiguing if you have fingers that are genetically engineered to be as weak as possible. Think about it: your hand might weigh, what, half a pound? How could you have any difficulty at all pressing something with 70 gram-force of force? It might be shocking at first if you're used to feather-light 30gf switches, but you'll get used to it I'm sure. Just varying the angle of approach of your fingers will give you more than enough weight behind your fingers to compensate for a measly 40gf difference.