Kriega is on the market for long time and they make great bags. I have several. I carry tools and air compressor in small US-5. And I have two US-10 and one US-20 I use in various occasions. US Drypack line-up is categorized as "sport touring" and they offer "adventure" OS line-up, but I have used my bags in toughest off road conditions and they hold well.
I am big fan of their mounting system, with OS Rack loops that can be attached to the bike and straps with G-hooks. Both US and OS bags use same system.
We incorporated pre-drilled holes for OS Rack loops onto our 2019+ KTM 690 Enduro Luggage rack.
Holes on the top surface are countersunk, so rack loops can be bolted to the underside using countersunk bolts. That way, top surface remains completely flat.
Holes on the "legs" are not countersunk, for more structural strength in this area.
OS-rack loops can be used for securing US or OS bags, or to secure OS-base.
Since there are four positions on each side, perfect placement of the straps is possible, no matter what bag is used. When rack loops are installed, they are almost invisible when not used.
G-hook straps are attached in seconds.
Here is US-10 mounted on the rack.
And mounted longitudinal.
And here is US-20, full.
Of course, many other combinations are possible, like using US-20 and two US-10 as US-combo 40.