Don't put this in a special channel just for vendor incidents. Hopefully you have a channel for each vendor tool where you have a vendor representative present. You put that bot in there. It's much more likely to be noticed and much less likely to be a channel that everyone ignores because it's SNR is to low.
Yeah, we did do this when we got large enough for a shared slack channel with aws. But for most orgs, just having this piped to your alerts channel is good enough.