"Surely if its that steep they'll make a difference you're probably walking anyway.. "
Depends on whether you're bike riding or taking your bike for a walk ..
I use my U-turn forks. Granted the click per 0.5mm travel is faff, but I wanted to be able to use the intermediate travel settings in between the newer Dual-position-air, 2step style setup as I knew the maximum travel on my fork would make my bike handle poorly in that setting
Lowest travel for ups, some singletrack. Middling travel for bits of both. Longest travel only for downs that I think might be more fun and aren't too pedally or slow/tight/stop-starty
The issue I have is working out what height to run the bars at? I could make the bike handle better with the fork at full travel with a flat stem slammed, maybe lower rise bars. But then it'd be so low in the lower travel settings that it'd only work on really steep stuff (else my back starts to moan). Conversly if I have the bars a bit higher so I can leave the forks in lowest travel on the flats/less techy downs, then the bike is worse with the forks wound out?