Anybody use them? I've got relatively low volume feet with my left foot flatter than my right (also have some plantar fasciitis in that foot, maybe from too much running, maybe from too much clutch use in stop-and-go Bay Area traffic).
I was using green superfeet in my mountain boots (LS Nepals, LS Trangos, Scarpa Omegas) to take up the volume but in the last couple years have started having some problems with blisters under my left arch on long hikes in, especially in the stiffer boots (Nepals, Omegas). I've been thinking of getting custom fit orthotics with a lower arch in the left foot, but the thermoformable "Sole - Ed Viesturs" footbeds seem like a cheaper option.
As an aside, do other people notice their feet getting flatter (and not necessarily equally on each side) as they get older? I've always had flattish feet but in my 20s, 30s and most of my 40s never had blisters or had to wear inserts, despite a fair amount (40-60 mi/wk) of running mileage and a fair amount of hiking mileage. Of course maybe that's why I have foot problems now...