I play a PVM swordsman having some magery. Had always enjoyed playing a summoner to hunt with demons. Now that I have vollem (unclaimed) which i heard is almost as good as a mare. Given limited stable slots (one blue beelte and one swampy) and the fact that vollem is not kind of "consumables" (summoned pet dies and you summon another one), is it worth to claim it as a companion? Thanks in advance for any advice.