I think its neat. It's quite Russian. There are some reservations about how well it would work in an English speaking sountry because people may hear "our katie" which is silly. To these reservations I say, "meh.
Arkady is neat."
I'd never heard of it when I choose my username though. I found
Arcadia in an alternative names article at namenerds. It was listed as an alternative to
Caitlin. My name is
Katherine nn
Katie. Katie...Caitlin... Close enough.
~
Arcadia