In reply to Dom Slater: It's several years since I did the Eggstocke, but what I remember is mostly steep ladders, an equally steep but short traverse on a cable...and a short bridge.
When you reach the ridge / plateau there is a bit of more scrambling type terrain, then you have the option to continue on the final harder section (which I omitted due to a slow party ahead, and a gathering murk). Descending from that point was not so pleasant, being mainly on steep grass with only thin cables to hold on to, but with one challenging steep step to descend.
I would say it's between the Schwarzhorn and the Tallistock in terms of difficulty, length and interest. While the location in the Glarus Alps (Glarner Alpen) is probably not so well known to most Brits, you do have in the immediate locality also the Ortstock (walk / trivial scramble, see logbook) and the Bos Fulen (scramble, probably 3s but I haven't done it, not in UKC logbook).