In reply to Mark Bull:
They are actually ok to ski with on and off piste in spring snow though you'd definitely want ski mountaineering or stiffer plastic boots for anything harder than a blue run. Being only a about a metre in length the lack of release bindings were never much of an issue. Having said that they're pretty rubbish for skinning with and more like a clumsy slidy snowshoes.
In reply to dutybooty:
I personally wouldn't bother with them for summer in the Alps...