Those grip grabs can be made to work with Moabs but they’re a bit of a faff. It’s real shame they didn’t do a better ankle cuff in them as they’d be great wet weather shoes otherwise.
OP- some sort of gaiter plus trousers makes my moabs pretty effective at keeping my feet dry, it’s just finding a gaiter that works. I’m still using the grip grabs and just accept i need to pull them down at the back occasionally. Been meaning to try something grippy on the back of the shoe to help hold them down.
Alternatively, the ‘winter’ version of the vaude shoes have a proper cuff. They’re just very warm!