I don't put a lot of weight on either the partisan split or the indie split in isolation, because there's no way to disentangle them. If you have a more favorable partisan split you can get away with a less favorable indie split, etc.
That said, it wouldn't surprise me if you're right that registered Rs crossing over to vote Harris would be more likely than other Rs to vote early, at least by mail. Rs seemed ok with voting early in person even in 2020.
I don't put a lot of weight on either the partisan split or the indie split in isolation, because there's no way to disentangle them. If you have a more favorable partisan split you can get away with a less favorable indie split, etc.
That said, it wouldn't surprise me if you're right that registered Rs crossing over to vote Harris would be more likely than other Rs to vote early, at least by mail. Rs seemed ok with voting early in person even in 2020.