Yes - bouclé benches are an extremely practical choice, even in white. Most boucle is stain resistant, meaning that if and when marks happen they can easily be smudged off with a damp cloth. But even better than that, boucle is a hardwearing fabric which even pets have a harder time destroying that most. The designer Olga Ashby has just specified a lot of bouclé for a project she is finishing in which the homeowner has three cats, knowing that even that number of claws won't pull it to pieces.
If you're worried about bouclé benches getting dirty than keep them out of entryways - a popular positioning choice - to avoid people taking off their muddy boots on them. But really, as far as fabrics go, bouclé is one of the more practical and most forgiving options you can buy, also being used on many of the best storage ottomans if you want to double up on function.