This is a quote from an old thread, I found it better to start a new one. Peter Goldsbury said
Since the technique should work, no matter who is your partner, the best way to do this, in my opinion, is to train with the entire dojo population. This also tends to discourage the bad habits of training excessively with preferred partners, or avoiding non-preferred, partners.
Is it a bad habit to choose who I practise with? I'd say habits in dojos vary. Why is it/why is it not a bad habit? What do you think?