i dont have enough experience to conclude that. but so far my limited experience is pointing in that direction, i experienced that with various pbt caps on glorious pandas, holy pandas, gazzew boba u4. i think i have some gaterons, ill try later
i also have mt3 serika and /dev/tty. wish we had more mt3 in pbt. but mt3 abs oso not bad. at least the matte texture of the scoops don’t make shine so obvious. and have you seen shine on vintage keycaps that have scoops like mt3? they rather look cool compared to shine on more flattish tops hehe