Which brings me unpleasantly to something touched upon in the white book...
When pairing, it is essential to maintain a level of personal hygiene that befits the process of sitting very close to another developer for the whole day.
So far one half of our new recruits has proved to be somewhat less than satisfactory in this area. It's hard to know - as an Englishman and a gentleman - quite how to breach the subject, but breach it I must.
I have slightly more confidence in my point of view as I've had this opinion shared by a long standing colleague.
The drinking, however, is not within the scope of my interest, having not as yet had a detrimental effect on any project that I have a current interest in. These things are often over-emphasised in our company, since the drunken antics (several years ago) of one former employee.
Anyhow, three months probation should be sufficient to determine the validity of our choices.
I wish them both the best of good luck.