Cool, got the PM, Xue. No space to send a reply, so I'll put it here.
There's no indication of where their Kobudo comes from (and a bunch of issues on the page itself, honestly), so I'd be a little cautious on that side… as far as the Iai, one of the instructors is apparently ranked Shodan in Muso Jikiden Eishin Ryu Iaijutsu (most organisations call it Iaido these days, but it's kinda neither here nor there)… not that high up, really, likely only a few years training themselves. If you were interested in the Iai side of things, I'd look to other, Iai-centric dojo… as far as the Kobudo, it didn't exactly fill me with confidence…
One of the sad things with karate schools is that they often integrate weapons without actually having a base in them… which could easily be the case here (I saw nothing to say that it actually came from anywhere specific… and, as I said at the beginning, lineage is the first thing to check out). Overall, it could be interesting, fun, great, or anything… but there's not much that would get me there.