That's actually pretty awesome because I HATE dealing with real driftwood. If I trim the roots a bit on the Anubias, it won't hurt it, right?
Occasionally I will do a little root pruning or thinning on Anubias and java ferns; the key word is 'little'. I never remove more than 20% of the total root mass. I remove a comparable amount of foliage (older, damaged, tangled leaves) when I do a root trim.