No insult of course. Sometimes foreign patronymics sound[s:gu3hcu7x]s[/s:gu3hcu7x] funny, but in case of slavic names (but when slavic names are concerned), they sound[s:gu3hcu7x]s[/s:gu3hcu7x] quite natural. Just remember that if you use Patronymic it means that (it means that could be omitted) you intend to be official and respectable.