I'd just get a single-slot MSDUO adapter and a large microSD formatted to FAT32 and call it good. Those dual-card adapters are asking for trouble. And to directly anser the OP, yeah, if the card was formatted properly and with maybe some luck. But the system would be SO SLOW.
It would, but not function properly. Anything over 32GB gives weird results, and isn't recommended. Just buy some of those dual 16GB memory card adapters and a few 16GB cards for them, and call it a day.