Unlike the underlings from Hogwarts, those who possess high affinity and proficiency in the art of magic prefer to summon their wand in public. A summoning spell requires a significant amount of concentration and knowledge of incantation spells. However, legend has it that a skilled wizard can call upon any inanimate object, regardless of size, without reciting magical words. Mass and quality depends largely on the wizard's ability to form a mental image in the mind.
The highest form of summoning related spell is the reversal, also known as the sealing spell, which is roughly ten times as difficult as performing a normal summoning, and takes a heavy toll on the user's stamina and focus. The summoning spell is a form of channeling spell, meaning it is not instantaneous and success varies proportionately with time.
Why would a highly skilled wizard prefer to use a summoning spell to call upon a puny wand, regardless of situation, every time?