It leans feminine to me but I wouldn’t bat an eye at a boy named [name_u]Hollis[/name_u].
Masculine only for me. I like it a lot.
Love it on a boy!
Unisex, but I especially love it for a boy so I always think “masculine” first. Such a lovely name 
I think it could work for either, but I prefer it on a boy.
I think it could go either way but I definitely prefer it for a boy!
Feels feminine to me, though I actually prefer it for a boy if that makes sense
I actually had a great-grandfather with middle name [name_u]Holly[/name_u]. Not sure if it was a family name
Feels completely gender neutral to me, but I prefer it on a boy.
Masculine for me. I really don’t like it for a girl.
The name sounds feminine to me just from knowing only female [name_u]Hollis[/name_u]’s and [name_u]Holland[/name_u]’s, but it could totally work for a boy!