wasn’t there a video on last week’s Mid-Week Movies of a guy using Power Grips or similar. seemed odd to. surely it is like using combi pedals (one side SPD, the other flat) and gives you that shitty “am i, aren’t i? (clipped in)” experience.
@ OP… if you are looking to use them on the climbs, does that mean you won’t use them on the downs? if so you’ll have two loops attached to you pedals ready to get caught up on anything you ride past. not a good idea, IMO.
the only time i can see the power grips being any use is with a fixed gear or maybe singlespeed (not MTB).