See HoH:MC p.89:
It is also generally held that Merinitae who are extremely fay in personality should bind magical familiars, not faerie ones, to help balance their two natures, and so there is no stigma associated with this choice — in fact, a Merinita maga might even bind a magical familiar simply to increase her reputation as faerielike.
Ime, this works nicely. Here is an example of a young Shadow Master strongly focused on Faerie Magic and benefitting from such balance.
Cervus Purpureus
Covenant: Covenant
Characteristics: Int +3 (Shrewd), Per +1 (Alert), Pre +1 (Fae), Com 0, Str ‑1 (Weak Grip), Sta +1 (Enduring), Dex ‑1 (Unhandy), Qik 0
Size: 0
Age: 25 (25), Height: 168 cm, Weight: 62 kg, Gender: Male
Decrepitude: 0
Warping Score: 0 (1)
Confidence: 1 (3)
Virtues and Flaws: Hermetic Magus, True Friend (Familiar) (Bonus: +3 to appropriate Personality Traits), Glamour, Inoffensive to Faeries, Deft Form (Imaginem) [Form: Imaginem], Skilled Parens, Affinity with Imaginem, Faerie Magic*, Minor Magical Focus (Glamour), Puissant Creo, Puissant Imaginem, The Gift, Vulnerable Magic (Magic dispelled when crossing over running water), Deficient Technique (Perdo), Ability Block (Martial), Disfigured (Antlers on Forehead), Cabal Legacy: Shadow‑Masters, Faerie Upbringing
Personality Traits: Brave +2, Loyal (Familiar) +3, Fae +2, Political +2
Reputations: Shadow‑Master (Hermetic) 1, Fae Wizard with Antlers (Hermetic) 1
Combat:
Dodge: Init: +0, Attack ‑‑, Defense +2, Damage ‑‑
Fist: Init: +0, Attack +0, Defense +1, Damage ‑1
Kick: Init: ‑1, Attack +0, Defense +0, Damage +2
Soak: +2
Fatigue levels: OK, 0, ‑1, ‑3, ‑5, Unconscious
Wound Penalties: ‑1 (1‑5), ‑3 (6‑10), ‑5 (11‑15), Incapacitated (16‑20), Dead (21+)
Abilities: Latin 4 (Hermetic Usage), Artes Liberales 2 (Grammar) (2), Code of Hermes 1 (Faeries), Faerie Magic 1 (Faerie Vis), Finesse 1 (Precision), Magic Theory 5 (Inventing Spells), Parma Magica 1 (Ignem), Penetration 1 (Imaginem), House Merinita Lore 1 (Initiating Others), Faerie Lore 1 (Faerie Forests), Magic Lore 1 (Creatures) (7), Concentration 1 (Spell Concentration), Awareness 1 (Alertness), Survival 3 (Woodlands), Brawl 1 (Dodge), Italian 5 (Large Vocabulary), Order of Hermes Lore 1 (Politics), Bargain 1 (Faeries), Etiquette 1 (Faeries), Charm 1 (First Impressions), Area Lore: Covenant 1 (Forests)
Arts: Cr 9+3, In 9, Mu 0, Pe 0, Re 0, An 0, Aq 0, Au 0, Co 0, He 0, Ig 0, Im 15+3, Me 0, Te 0, Vi 6
Equipment: Small Porphyry Statue of Feronia; Stone painted with a deer (Permanent Charm); Stone painted with a bear (Permanent Charm); Stone painted with a horde of charging boars (Permanent Charm); Survival Kit; Wax Tablet; Wizardly Robes
Encumbrance: 0 (0)
Spells Known:
Charge of Enraged Glamours (CrIm 35) +43 - Glamour
Glamour Animal (CrIm 45) +43 - Glamour
Remote Stand‑In Image (Cr(In)Im 25) +28
Eyes of the Eagle (InIm 25) +28
Disguise Self (MuIm 10) +19
Wizard's Sidestep (ReIm 10) +19
Vis: Crystal of Imaginem Vis: 1 Pawn of Imaginem vis, Penetration: 0, Range: Touch, +1, Duration: Sun, +2, Target: Ind, +0, Level: PeIm20, Pawns Used For: Bind Familiar (9); Physical Form: rock crystal;
Pica
Type: Magpie
Characteristics: Int +1, Per +2, Pre ‑1, Com ‑2, Str ‑8, Sta +1, Dex +3, Qik +6
Size: ‑4
Soak: 1
Magic Might: 35
Cord Scores: Gold +3, Silver +1, Bronze +1
Familiar Powers: Invisibility (Points: 1; Initiative: 0; Form: Imaginem; Can become completely undetectable to normal sight, but still casts a shadow. R: Per, D: Diam, T: Ind); Athletics 4 (Nimble Flight); Awareness 5 (Spotting Items); Legerdemain 4 (Stealing); Survival 4 (Woodlands); Fight 2 (Dodge); Latin 4 (Hermetic Usage); Italian 5 (Large Vocabulary); Area Lore: Covenant 1 (Forests); Artes Liberales 1 (Grammar)