Serge wrote:
I mean, you can get a high - end racing bike and and ride around
casually;
many people do. You can not do anything on high - end racing ski but
train and race on prepared surface.

That's not true:

I have skied more than 10 times from north to south of Telemark county
in Norway (a 180 km backcountry, four-day trip) using my skate skis
(with grip wax on them though).

Skate skis are slightly easier to control than classics, since they have
a straight edge instead of a significantly narrower front and tail.

Terje

--
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"almost all programming can be viewed as an exercise in caching"