We're renovating two bathrooms in San Francisco where the weather is mild year-round but can be chilly in the mornings and evenings. We'll have heat registers (new heat pump) in both bathrooms. However, we want to make sure the rooms are comfortable for taking a shower when the heater isn't running. For the master bath, we're adding a Amba Quadro - to help keep the room warm. Warm towels a nice plus! In the hall bath, we're considering heat mat or towel warmer. What would you recommend? And for the master bath, would it be overkill to have both heat mat and towel warmer?