Do the black leather vests or cuts have the letters "MC" on them anywhere? If not, they are likely not an 'outlaw motorcycle club'.
Typically the giveaway for a truly "outlaw" MC club involved in underworld-style criminal activity will be the appearance of "1%" somewhere on the bike or vest, in addition to a 3-piece patch including the club logo on top and the rocker patches below that. Mainstream social or dues-paying clubs usually have one or two-piece patches only.
The Big 4 outlaw MC's typically are considered to be the HA's, the Outlaws, the Bandido's and - depending on the source - either the Mongols and/or the Pagans. As far as I am aware of those only the HA's have ever established a presence in BC or the island. This "Bombers" outfit is likely more of a social riding club by the sounds of it although its possible they are a HA subordinate club.