[CQ-Contest] Mult passing: is it okay to use?

[Frank R. Oppedijk]

Hi group,

I'm a member of the PA6Z contest group and we're about to take up a 
technique that we haven't used earlier, namely that of multiplier 
passing. With this, I mean: asking a station on the band to QSY to 
another band, in order to also make a QSO on that other band.

Voices went up saying that the technique of multiplier passing would 
be not allowed to use in some / most / all contests. Or at the least 
that it was a technique that would be frowned upon by the contest community.

I am not aware of multiplier passing as being prohibited, or having a 
negative aura, and wonder if anyone of you has a definitive answer. 
And does the contest community frown upon the use of mult passing as 
a technique to increase the multiplier count?

Thank you, 73,

Frank PA4N