If you want to keep its price sock it pame, its still ok for bvb with 99ed 6str and cold res.
Maybe 3-4k at max.
Pdia or any other res socket = waste because:
1. Bva: pavise is heavy with -10 run malus (you dont want this on your bva)
2. pvm: a 1h pvm barb is really useless. As gaya said you can use it to lvl passively but you could also use other shields for that as well
If you want very high level barb... Use this in chaos. With ruby