I had a rohloff on a 5 spot (HL) for a while..
Yes you need somethign up front to guide the chain.
make sure you have allowed for the full suspension travel with the tensioner, I was forever unshippinging the chain, which is a pain cause you can’t flick a lever.
it came off the back a lot, as well as the front, even with a tensioner.
I decided after years of trying to make it work that combined with an annoying shifter, I’d go back to mechs on FS and use the rohlf on a hard tail.
I won’t go hub gear on full sus again until I’m convinced the chain can be held more firmly.
Annoying coz I love the hub!