> Most mics can run well under 48v without issue.
That's certainly not true at the professional level. I just made a mental list of what I would consider to be the seven most highly-regarded manufacturers of studio condenser microphones in the world; only two of them sell any microphones that can run properly with phantom powering of less than 48 Volts, only certain models from those two are that way--and for one of those two manufacturers, if the mike isn't running on IEC standard 48-Volt phantom powering then it has to be running on IEC standard 12-Volt phantom powering, which is an equally strict standard. For all the other top-tier condenser microphones that use phantom powering, it's strictly IEC standard 48-Volt phantom powering--no ifs or buts.
If people put up with substandard phantom powering in their preamps, recorders, interfaces or whatever, then whenever anyone tries to connect a pair of really good microphones, the microphones won't put out the quality that they're capable of and/or the equipment (including the microphones) will be unreliable--as in, it might literally burn out. Please don't be a part of setting people up for that to happen.
--best regards