What trunk bags are compatible with CUBE Integrated Carrier 3.0, ACID RILink Adapter Compatible

HI all, new to the forum and hoping to pick up a Cube Kathmandu EXC 750 in a few weeks time. The bike comes with the CUBE Integrated Carrier 3.0 (ACID RILink Adapter Compatible) that has a square bar cross section. I'm looking for a trunk bag that is compatible with this frame or the RILink system. From my internet trawling, it appears that this carrier is only compatible with the ACID / Cube panniers and trunk bags.

So the questions I have are:

1) Are there any alternative trunk bags that will work with the RILink system or can clip directly onto the square cross section carrier

2) If I purchased a trunk bag with velcro/other connecting straps, could I use these fasteners to connect the bag to the RILink Adapter then use that to connect to the rack.

Thanks in andvance!

... The bike comes with the CUBE Integrated Carrier 3.0 (ACID RILink Adapter Compatible)

So the questions I have are:

1) Are there any alternative trunk bags that will work with the RILink system or can clip directly onto the square cross section carrier

I'm personally not aware of any

I might be wrong on this though, so check, but I looked into this a year or so ago for a friend who had this system on her bike.

2) If I purchased a trunk bag with velcro/other connecting straps, could I use these fasteners to connect the bag to the RILink Adapter then use that to connect to the rack.

This should work ok.

Of course ... this is a good option only if you want a trunk bag that you will be taking on and off regularly.

On my main commuting bike, my trunk bag (which also has large fold out panniers if needed) is velcroed on and I've found I never take it off.

Also - there are other options of trunk bags that have a base plate that's velcroed on, then the main trunk bag is attached to this base plate and can be very quickly removed. I have an Altura one like this (I think its called a rack pack)