Blink XT2, ST hub and Echo

Hi all.
I’m planning to buy a Blink XT2 pair of cameras for external use but I have a couple of questions.
I understand that we need a sync module, but it seems like there is also the option of replacing sync module with an echo.
As I have a ST hub and an echo already do I need the sync module to link to Smart things?
I suppose I could use IFTTT but I wanted a more direct link.

@lee_ness, how did it go with the XT2? Any wisdom or experiences to share?

I just bought a 5-pack, and so far I am very happy with the functionality, other than it is obviously not designed for Smart homes. I found a deprecated interface to it in this community, but no way to enable Smart Home features now that this interface is no longer available.