It's horses for courses - In over 35 years of professional aviation, I have never come across any commercial air transport operator that favours the 'wing-down' technique, for many of the reasons previously stated. However, the same imperatives do not exist in light (especially high wing) aeroplanes and so it comes down to personal preference. If you elect to employ the 'wing-down' technique, expect to have to change if and when you move on to bigger things.