Hmm, your idea is not without merit but over time I've grown so accustomed to the notion of my characters' powers being internalized or at least imbued in easy-to-carry, hard-to-lose items that to tie them to something as bulky as an helmet just feels awkward and innatural. However if gauntlets look appropriate for +2 Refresh, they might fall just within the bounds of what I deem acceptable. I suppose the character may carry them tucked in or tied to his belt, or in a backpack with the rest of his ritual tools, when he does not use them. Rather than the Sight or Sponsored Magic, such an item seems fitting to have Claws, Inhuman Speed, and Inhuman Strength enchanted in it. I suppose I might call it Gauntlet of Might.
I don't regard the character being deemed a full wizard that much important. It is only necessary he has Evocation, Thaumaturgy, Sponsored Magic, Toughness powers, enough Refinement to have all elements, and wizardly longevity (which he gets anyway with Inhuman Recovery). He certainly does not care about the White Council and their opinion of him. So being a changeling sorcerer does suffice, and indeed the lowest power-level builds give him that template. But with enough Refresh, having the Sight, some extra Refinement for more generalist bonuses to Evocation, and the above physical abilities sure feels nice to round up the character's power set and make him look and feel close to complete. In comparison, I would not give Soulgaze the time of day, even at free cost. At this point, only Wings, True Shapeshifting, and Swift Transition would remain on my to-buy list.
By the way, besides my own preferences, I realized having a serious problem with tech may encourage characters like mine with an hyperactive Murphyonic field to adopt a semi-nomadic lifestyle. They may draw only so much benefit from mundane equipment and wealth: almost all the items they may use w/o wrecking them by being close are freely available at Average expenses or lower. So unless they have a special interest in owning an especially fancy living space or high-quality library or laboratory facilities (my character doesn't), they may well embrace the rootless lifestyle. So I think Harry living in a rented apartment does make sense, although w/o his perpetual poverty problem, he could perhaps afford a better lifestyle.
As it concerns my character, he may rent apartments or a room in hotels or even live on the road, buy time or trade favors to train in dojos, and carry the vast majority of his ritual tools and personal stuff in a backpack or two. He probably got accustomed not to rely too much on having a library or sanctum. Much like martial-arts training, he likely trades favors with allies and contacts when he has need of such arcane resources (it seems it takes some serious wealth and effort anyway to build high-quality libraries and sanctum facilities), and otherwise he carries the vast majority of his occult lore memorized in his head, or perhaps he makes use of summoned and bound spirits of knowledge. I assume the vast majority of his expenses come from renting, traveling (assuming he does not use the Nevernever, which he probably does to some extent), training, occult research, and ritual materials. Being lecherous/hedonist, in all likelihood he also spends some significant time and money looking for casual sex and partying.