Since the QRH recommends use of select speed it takes out the GS mini out of equation. No need to expressly ban GS mini.
my current QRH only mentions to select VFE-5kt in order to configure safely. once in LDG config i don't see the procedure speaking against managed speed. purely speaking about being in LDG config, no question about the other phases.
since we use managed SPD for landing in normal daily ops i would expect airbus to explicitly tell us not to use it if they don't want us to. i.e. as they do for overweight landing procedure "SPEED AT RUNWAY THRESHOLD: VLS"