In reply to earlsdonwhu:
> (They don't say that the alternative is to take skis off
> and put on normal crampons..... doable but more tiring!
Well if the whole slope has a uniformly hard surface which is supportive of going on boots, then it's not necessarily more work to just boot up it carrying skis on pack.
But . . .
If a hard crust is supportable for the larger surface of a ski with ski-crampon, but breakable for the much smaller surface of boot with boot crampon -- then using normal boot crampons is _much_ more work.
The more realistic problem is that the slope varies, so that only a few parts of the slope might require ski-crampons -- and perhaps those would be supportive of going either on boots or on skis -- but most of the slope does not require ski-crampons and is not supportive of booting.
But you don't know in advance where or if you'll need boot-crampons, so without ski-cramons you could end up needing to switch from skis to boots in a very awkward spot -- and then how do you know when it's right to switch back ... and ... later switch again?
Ken