Window graphics do two unrelated things. One is marketing: identifying the business, listing hours, running promotions. The other is compliance: making large areas of glazing visible so people do not walk into them.
The compliance side is governed. Full height glazing and glass doors need manifestation at two heights under Approved Document K. That requirement is usually met with plain frosted bands, but there is no reason it cannot carry your brand pattern instead and do both jobs at once.