Not being a Canonoid, I don't know. But it is a fairly recent "digital" flash, and system exclusive flashes are fairly common among these. Besides, it seems to lack an "A" mode - if it works at all, it will only do so in fully manual mode.
Personally, I'd go for an older flash with A mode(s). Just about any should work fine, so far, I have not encountered a film system dedicated flash with A setting that was not cross-brand compatible in basic A mode. In the film age, the only way flashes were sometimes restricted to one camera or brand was through lack of non-TTL modes (or the Minolta iISO shoe, which however is adaptable, provided that you are ready to pay more for a used copy of the now extinct adapter than for any used Monolta flash).