Where to put skill points on grenades?

[Twisted]

Ok, so I just mastered my grenades. I have been using smoke bombs for awhile so I haven't put any points on anything besides one on siege charge to see how they were. Just asking you guys before I start putting them on pointless skills. Or... Should I just leave it and hope for the next big update to add more skills?

Any ideas? Here are the points as they sit.


Combat Skills
2/5 Throw
1/5 Volley

Ammo Skills
5/5 Explosives
2/5 Stink Pot
2/5 Fire Bombs
1/5 Smoke Bombs
1/5 Siege Charge

Passive Skills
2/5 Determination
1/5 Demolitions
0/5 Toughness
1/5 Ignore Pain

I have 8 points to use now. Anything I should be putting them on? I think it was a mistake to put all 5 on explosives as they do too much damage to get any decent rep. But, putting only one on smoke helped alot at high levels.

Thanks in advance for all the ideas etc.