I used a Topeak on my Vado 4.0 not the SL and it worked great very secure and lots of options for bags and panniers
Yes, the Topeak MTX system is also good.
My 2022 Vado 4.0 came with fenders and a MIK-compatible rack, and my wife's Trek has a MIK-compatible rack, so I'm a bit focused on that system.