I think Vicki is a sweet name, especially with the cute “i” ending. It sounds really precious and gentle, yet undeniably strong at the same time. It's a nice name.
It sounds quite ditzy and tacky, at least as the official name. I don't like this as a nickname either. It's so youthful and girly, and bordering on trashy.
I think this is a cute nickname for Victoria. It's definitely my favorite spelling of this nickname. Maybe it's a bit outmoded for the 21st century, though. Tori seems to be a more popular nickname these days.
It's a nice name.