I bought a K-KO (or something like that) leather case from TELUS and I had no issue with it.
I'm replacing it for a Ebay leather case though because the K-KO's leather is so thick that it mutes the ringtone speaker
I've ordered this one :
http://cgi.ebay.ca/Leather-Case-Belt...item518d5144d6
I'll let you know if it worth it...