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In doubles you should avoid defending if possible, so if you want to play a flick serve you should consider why you would want to play it.
If you are playing someone who is very weak at the back of the court then you may be able to get a weak reply from a good length flick and then get on the attack.
However, as the level of opposition increases, players become much better at getting behind shuttles and playing strong attacking shots, so it is would not be advisable to continuously flick serve.
A poor quality flick serve at the wrong time will lose you the rally! At high level play the flick serve is used as a variation to a low serve and it is the serve variation that may force a weaker reply from the opposition