I hate it, it's a pretty unspoken rule but should never be done IMO.
It may not be a big deal early, but after the first few rounds it is even more serious so you may as well enforce it early. Sometimes certain players just slip a guys mind before he picks, or he had his guy in mind, reads a name and goes "oh yea" then takes him.
There are all kinds of reasons for it to not be done, but most people here know that already.
