Ever is a bit strong but yeah. If I'm climbing a rugged trail I still want suspension. If I'm climbing a boring long fire road then I might use a lock out if I can remember. Neither of my forks have a lock out so I just turn up low speed compression dampening again if I remember. Then I have to remember to to turn it back down again before I hit a down hill section, also hard to do. Unless you are standing up mashing the lock out doesn't do much anyway.

Rear suspension it is more useful but that depends on how good your rear suspension is. My current bike doesn't really pedal bob at all even with the shock fully open. My two older full suspension bikes bobbed a lot and even pro-pedal didn't make a whole lot of difference, a lock out would have been nice on those.