As long as you don’t want to change color and you just want dimming and on off, it’s easy.
In smartthings, you can have one switch follow another, and they don’t have to be on the same circuit. Switch A communicates to the hub, which then send the message to switch B. They don’t even have to be the same protocol.
The fibaro is what you would need (or some similar device) to add RF control to the LED strip. But once you have that, the hub can talk to the fibaro. And then you’re ready to have a different switch tell the hub to ask The Fibaro to do something.
You’ll find A number of possible options discussed in the following thread. The only one that isn’t going to work for some technical reasons is the Phillips hue dimmer switch, because it actually talks to the Phillips hue bridge, not to the smartthings hub. But I believe all the other suggested methods in that thread are using devices that talk to the hub, so you’ll be fine.
If you want to be able to change colors from a wallmount device as well, you pretty much have to go to a mounted tablet or Wi-Fi phone. Or use the “scene” idea where One button on the wall mount device means red, a different button means blue, etc. That will work for some people, but is usually too hard to remember for a family situation.