It's interesting. My brain tends to classify it among the names an American would call "stuck-up stereotypical British names" :P
I've never met any, so when I see it I think SY-ril and then have to correct myself ("no, SEER-il").
I like
Kiril.
Kira's on my 'would use' list for girls...
In general I prefer
Cyrus (and
Cerdic, which gives me a similar vibe for some reason) but I wouldn't be dissapointed if I saw someone named
Cyril (mainly because I've never met one before).