Well, basically I have two different accounts. One of them is a lvl 112, with good combat stats, and 1 summoning(Though he hasn't got any good cb stats).

 

But the other one has also, pretty much the same stats, but is a lvl 116, with 52 summoning. In the other hand, he owns a sc in cooking, has about 5 non combat stats 80+.

 

 

 

So I ask, will summoning be used in pvp, and with which user should I grind with?

I have a feeling it will be used, but train your stats so that you're 120+ alone w/o summoning. It would be more useful in higher level fights when you're hitting low #s or hitting infrequently.