I will play in a 1850 pts RT tournament this fall and will hopefully have finished painting my orks by then. I will field the following (very summarized version):
warboss, 2 squads of 20-24 slugga boyz with nob+powerklaw, burna boyz with mekboy+KFF, 2 squad of trukk boyz with nob+PK, 3 killa kan, battlewagon full of big shoota.
Now I was planning on 2 squads of 30 grots.
I could also do 3 squads of 20 grots, filling out all my troop slots (great for a tournament).
What do you think? Would it be good? More versatility in movement and deployment but also less resilience (20 grots can fall fast). Grots will be used to screen the slugga boyz. Also adding a squad of grots means 1 more slaver with a rokkit launcha.