GPS? Well I got given one to carry the other weekend when pacing the Helvellyn section but it just stayed in the top pocket of my sack beeping, whether the beeps were to comfort me or tell me off I don't know. Even in the murk I was quite happy with my map and compass and we didn't get lost.
I've no problem with a GPS as that effects no one else and any with a supported round your pacers should be leading the way anyways does it matter what they use?
But marking the route is different, part of the challenge for some is to navigate around using features and there own cunning.

Bill

This is building up to me and divot getting lost back o' Skiddaw